Question

What is the slope of the line that passes through (3, -7) and (-1, 1)?

Answer 1

(3, -7) and (-1, 1)

To find slope of a line using 2 points

we use formula

$\frac{y_2 - y_2}{x_2-x_1}$

(3, -7) is (x1,y1) and (-1, 1) is (x2,y2)

Here x1= 3  and y1= -7

x2=-1 and y2=1

$\frac{1- (-7)}{-1-3}$

$\frac{8}{-4}$=-2

slope   of a line using 2 points (3, -7) and (-1, 1) is  -2