Question

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

a. y = −2x + 1
b.y = −2x − 1
c.y = 2x + 1
d. y = 2x − 1

Answer 1

C

(7-3) / (3-1) = 4/2
y=2x + b
3=2(1) + b
b = 1
so y = 2x + 1