Question

Find the equation of the line. Use exact numbers.

Answer 1

Answer:
`y=4x-9`

Explanation:

`y=mx+b`

I know b is -9 because there's where the line crosses the y intersection.

`y=mx-9`

To find ''m'', we can use 2 different methods. I'm going to use one that follows a formula. First, locate two points in the graph.

`(0,-9);(3,3)`

`m=(y_2-y_1)/(x_2-x_1)\\ m=(3-(-9))/(3-0)\\ m=(3+9)/(3)\\ m=(12)/(3)\\ m=4`

`y=4x-9`