Question

What is the equation of the line passing through the point (-4, -5) and having a slope of 4?

Answer 1

y=4x+21

Answer 2

y=4x-21

Answer 3

y=4x+11

Answer 4

y=4x-11

Answer 5

@iGreen

Answer 6

y=4x+11 goes up 4

Answer 7

y=4x+21 goes up 4 too

Answer 8

Plug those into Point-Slope form.

\(y - y_1 = m(x - x_1)\)

Where \(y_1\) is the y-value of the point, \(x_1\) is the x-value of the point, and \(m\) is the slope.

So we have:

\(y + 5 = 4(x + 4)\)

Distribute 4 into the parenthesis:

\(y + 5 = 4x + 16\)

Subtract 5 to both sides, what's 16 - 5?

Answer 9

11

Answer 10

y=4x+11?

Answer 11

Yep, you got it.

Answer 12

thx