Question

Find the slope of the line passing through the points $A(-2,1)$ and $B(0,3)$

Answer 1

$A\equiv (-2,1)=(x_1,y_1)$
and $B\equiv (0,3)=(x_2,y_2)$
Then, Slope of line $AB=\frac{y_1-y_2}{x_1-x_2}$
$=\frac{1-3}{-2-0}$
$=\frac{-2}{-2}=1$