Answer:
y = 17 - 4x or y = 17 + (-4x)
Explanation:
Plug the slope (m) into the equation y=mx+b so it becomes y = -4x + b
Then see how much your line changed from the point to the y-axis. In this case, it changed by negative 12. So you have to go up 12 points to reach the y-intercept. (5+12=17)
Then, plug that number into the equation.
y = 17 - 4x