If the line is parallel, you know it’s going to have the same slope, which in this case is 3
Using the format y= mx + b, plug in your x and y values to find b (m is the slope)
-11 = 3(-4) + b
-11= -12 + b
b = 1
You now have all the needed values to write the equation in slope-intercept form:
y = 3x + 1