Answer:
y = 4x - 5
Step-by-step explanation:
Since we already know the slope. You just have to plug the coordinates into the equation so far, y = 4x + b, to find out the y-intercept.
y = mx + b; m is the slope and b is the y-intercept.
7 = 4(3) + b
7 = 12 + b
-5 = b
So the equation is y = 4x - 5
