Answer: y = 3x - 3
Explanation:
To create a slope-intercept form equation we need two parts, the slope and the y-intercept.
We can use the slope formula to find the slope. We have a slope (m) of 3.

Next, we can set up our current equation with a given coordinate point to solve for the y-intercept (b). We have a y-intercept of (0, -3).
y = 3x + b
(0) = 3(1) + b
0 = 3 + b
-3 = b
Lastly, we will use these two parts to create our equation.
y = mx + b
y = 3x - 3