Question

the points (-4,0) and (s,-1) fall on a line with a slope of -1/8.what is the value of s?

Answer 1

We will use the formula;

$m=\frac{y_2-y_1}{x_2-x_1}$

m=-1/8 x₁= -4 y₁=0 x₂=s y₂=-1

$-\frac{1}{8}=\frac{-1-0}{s+4}$$-\frac{1}{8}=\frac{-1}{s+4}$

-1(s+4) = -8

multiply both-side of the equation by -1

s+4 = 8

subtract 4 from both-side of the equation

s + 4 - 4 = 8 -4

s = 4