18. What is the y-intercept of the line that passes
through the points (1, 1) and (5, 13)?
A. -2
B. -1
C. 1
D. 2

A (-2)

Step-by-step explanation:

First, make an equation of the line.

Start off with finding the slope:

Slope = (13-1)/(5-1) = 12/4 = 3

Then solve for the y-intercept though substitution and simplification:

y=mx+b --> 1=3(1)+b --> 1=3+b --> b= -2

So the answer is A.

b i think

step-by-step explanation:

not really sure