diff --git a/1ST/Questions_flashs/P2/QF_S49-1.pdf b/1ST/Questions_flashs/P2/QF_S49-1.pdf
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diff --git a/1ST/Questions_flashs/P2/QF_S49-1.tex b/1ST/Questions_flashs/P2/QF_S49-1.tex
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+\documentclass[14pt]{classPres}
+\usepackage{tkz-fct}
+\usepackage{pgfplots}
+\usetikzlibrary{decorations.markings}
+\pgfplotsset{compat=1.18}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Première ST
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Taux évolution
+    Une quantité passe de 90 à 120.
+
+    \vfill
+
+    Quelle est le taux d'évolution de cette transformation ?
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % Equation graphique
+    Déterminer graphiquement $f(x) \leq 0$
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, 2)
+                    (-4, 3)
+                    (-3, 4)
+                    (-2, 3)
+                    (-1, 0)
+                    (0, -2)
+                    (1, -1)
+                    (2, 0)
+                    (3, 2)
+                    (4, 2)
+                    (5, 3)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    % Taux de variations
+    Calculer le taux de variation entre -3 et 5.
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, 1)
+                    (-4, 3)
+                    (-3, 4)
+                    (-2, 3)
+                    (-1, 0)
+                    (0, -2)
+                    (1, 0)
+                    (2, 3)
+                    (3, 4)
+                    (4, 3)
+                    (5, 0)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    % Équation de droite
+    Déterminer l'équation de la droite.
+
+    \begin{center}
+        \begin{tikzpicture}
+            \begin{axis}[
+                axis lines = center,
+                grid = both,
+                xlabel = {x},
+                xtick distance=1,
+                ylabel = {$f(x)$},
+                ytick distance=1,
+                ]
+                \addplot[domain=-2:2,samples=2, color=red, very thick]{2*x - 1};
+            \end{axis}
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/1ST/Questions_flashs/P2/QF_S49-2.pdf b/1ST/Questions_flashs/P2/QF_S49-2.pdf
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index 0000000..7ac3e7b
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diff --git a/1ST/Questions_flashs/P2/QF_S49-2.tex b/1ST/Questions_flashs/P2/QF_S49-2.tex
new file mode 100755
index 0000000..5631e25
--- /dev/null
+++ b/1ST/Questions_flashs/P2/QF_S49-2.tex
@@ -0,0 +1,112 @@
+\documentclass[14pt]{classPres}
+\usepackage{tkz-fct}
+\usepackage{pgfplots}
+\usetikzlibrary{decorations.markings}
+\pgfplotsset{compat=1.18}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Première ST
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Taux évolution
+    Une quantité passe de 150 à 60.
+
+    \vfill
+
+    Quelle est le taux d'évolution de cette transformation ?
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % Equation graphique
+    Déterminer graphiquement $f(x) \leq 0$
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, -1)
+                    (-4, -1)
+                    (-3, 0)
+                    (-2, 3)
+                    (-1, 0)
+                    (0, -2)
+                    (1, -1)
+                    (2, 0)
+                    (3, 2)
+                    (4, 2)
+                    (5, 3)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    % Taux de variations
+    Calculer le taux de variation entre 0 et 3.
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, 1)
+                    (-4, 3)
+                    (-3, 4)
+                    (-2, 3)
+                    (-1, 0)
+                    (0, -2)
+                    (1, 0)
+                    (2, 3)
+                    (3, 4)
+                    (4, 3)
+                    (5, 0)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    % Équation de droite
+    Déterminer l'équation de la droite.
+
+    \begin{center}
+        \begin{tikzpicture}
+            \begin{axis}[
+                axis lines = center,
+                grid = both,
+                xlabel = {x},
+                xtick distance=1,
+                ylabel = {$f(x)$},
+                ytick distance=1,
+                ]
+                \addplot[domain=-2:2,samples=2, color=red, very thick]{-2*x + 1};
+            \end{axis}
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/1ST/Questions_flashs/P2/QF_S49-3.pdf b/1ST/Questions_flashs/P2/QF_S49-3.pdf
new file mode 100644
index 0000000..af2ae7e
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diff --git a/1ST/Questions_flashs/P2/QF_S49-3.tex b/1ST/Questions_flashs/P2/QF_S49-3.tex
new file mode 100755
index 0000000..7270ddf
--- /dev/null
+++ b/1ST/Questions_flashs/P2/QF_S49-3.tex
@@ -0,0 +1,112 @@
+\documentclass[14pt]{classPres}
+\usepackage{tkz-fct}
+\usepackage{pgfplots}
+\usetikzlibrary{decorations.markings}
+\pgfplotsset{compat=1.18}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Première ST
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Taux évolution
+    Une quantité passe de 30 à 240.
+
+    \vfill
+
+    Quelle est le taux d'évolution de cette transformation ?
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % Equation graphique
+    Déterminer graphiquement $f(x) \geq 0$
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, -1)
+                    (-4, -1)
+                    (-3, 0)
+                    (-2, 3)
+                    (-1, 0)
+                    (0, -2)
+                    (1, -1)
+                    (2, 0)
+                    (3, 2)
+                    (4, 2)
+                    (5, 3)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    % Taux de variations
+    Calculer le taux de variation entre -2 et 3.
+    \begin{center}
+        \begin{tikzpicture}[scale=0.8]
+            \tkzInit[xmin=-5,xmax=5,xstep=1,
+            ymin=-3,ymax=5,ystep=1]
+            \tkzGrid
+            \tkzAxeXY
+            \draw[very thick, color=red] plot [smooth,tension=0.5] coordinates{%
+                    (-5, 0)
+                    (-4, 1)
+                    (-3, -1)
+                    (-2, 1)
+                    (-1, 3)
+                    (0, 1)
+                    (1, 3)
+                    (2, 2)
+                    (3, 1)
+                    (4, -2)
+                    (5, -3)
+                };
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    % Équation de droite
+    Déterminer l'équation de la droite.
+
+    \begin{center}
+        \begin{tikzpicture}
+            \begin{axis}[
+                axis lines = center,
+                grid = both,
+                xlabel = {x},
+                xtick distance=1,
+                ylabel = {$f(x)$},
+                ytick distance=1,
+                ]
+                \addplot[domain=-10:4,samples=2, color=red, very thick]{0.5*x + 4};
+            \end{axis}
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}