Användare:17daja: Skillnad mellan sidversioner

Versionen från 8 mars 2018 kl. 09.53

[math]\displaystyle{ x_1 = -3 }[/math]

[math]\displaystyle{ x_2 = 5 }[/math]

[math]\displaystyle{ y_2 = 4 }[/math]

[math]\displaystyle{ y_2 = -2 }[/math]

[math]\displaystyle{ k = \frac {\triangle y}{\triangle x} = \frac {y_2 - y_1}{x_2 - x_1} }[/math]

[math]\displaystyle{ k = \frac {(-2) - 4}{5 - (-3)} = \frac {(-6)}{8} }[/math]

[math]\displaystyle{ k = -0.75 }[/math]

[math]\displaystyle{ y = kx + m }[/math]

[math]\displaystyle{ m = y - kx }[/math]

[math]\displaystyle{ 4 - (-0.75) * (-3) }[/math]

[math]\displaystyle{ m = 1.75 }[/math]

[math]\displaystyle{ y = -0.75x + 1.75 }[/math]

@@ Rad 3: / Rad 3: @@
 : <math> y_2 = 4 </math>
 : <math> y_2 = -2 </math>
 : <math> k = \frac {\triangle y}{\triangle x} = \frac {y_2 - y_1}{x_2 - x_1} </math>
+: <math> k = \frac {(-2) - 4}{5 - (-3)} = \frac {(-6)}{8} </math>
+: <math> k = -0.75 </math>
+: <math> y = kx + m </math>
+: <math> m = y - kx </math>
+: <math> 4 - (-0.75) * (-3) </math>
+: <math> m = 1.75 </math>
+: <math> y = -0.75x + 1.75 </math>