Question

A line passes through (-5,23) and (-1,3). What is an equation of the line?

Answer 1

y = -5x - 2

Explanation:

Slope m = (y2-y1)/(x2-x1)

given (-5,23) and (-1,3)

m = (3 - 23)/(-1 - -5)

m = -20/4 = -5

then Slope-intercept: y = mx + b

y = -5x + b

using (-1,3)

then 3 = -5(-1) + b

3 = 5 + b

b = -2

then y = -5x - 2