Question

What is y+1 = 4(x - 1) in slope-intercept form?

A. y+ 1 = 4x - 4
B. -4x+y=5
C. y = 4x-5
D. 4x- y=-5

Answer 1

would be y=4x-5

steps are

multiply 4 by everything in parentheses

y + 1 = 4x - 4

subtract 1 from both sides

y = 4x -5

Answer 2

C. y = 4x-5

Explanation:

Slope-intercept form : y=mx+b

`y+1 = 4(x - 1)`

Expand :

`4(x-1) =4x -4\\\\y+1 =4x-4`

Collect like terms and simplify

`y=4x -4-1\\\\y=4x -5`