Question

The question is in the picture

Answer 1

The answer is that Y=4x-1

Answer 2

Answer: y = 4x-1

Explanation:

1) Choose two points for the later equation.

For this example, I will use (-1,-5) and (2,7)

2) Place it in a rise/run equation. (y/x)

`(y2-y1)/(x2-x1) \\\\(7-(-5))/(2-(-1)) \\\\(12)/(3) \\\\4`

The Slope is 4.

3) Find the y-intercept

So, we can place a given point and slope into a y=mx+b function.

`y=4x+b`

Next, we can substitute the point and slope.

`7 = 4(2)+b\\7=8+b\\-1=b`

4) Finally, place it all in slope intercept form

y = 4x-1