Question 83840
You can start by writing the slope-intercept form of a linear equation.
1) y = mx+b (m = slope, b = y-intercept)
You have been given the slope, m = 2, so now you can write:
2) y = 2x + b Now you need to find the value of b.
You can do this by substituting the x- and y-coordinates from the given point (4, -8) into equation 2) and solving for b.
-8 = 2(4) + b
-8 = 8 + b Subtract 8 from both sides.
-16 = b Now that you have b, you can write the final equation.
{{{highlight(y = 2x - 16)}}}