Question

The equation y-1=-7(x-3) is written in point-slope form. What is the y-intercept of the line?

Answer 1

For this case we have that, the equation of the line in slope intercept form is given by:

$y = mx + b$

Where:

m is the slope

b is the cut point with the y axis

If we have:

$y-1 = -7 (x-3)$

We take it in the form $y = mx + b$ we have:

Knowing that $- * - = +$ and applying distributive property to the terms of the parenthesis:

$y = -7x + 21 + 1\\y = -7x + 22\\So,\ b = 22$

Answer:

Option D

Answer 2

It's maybe 22 ,(-_-メ)