Answer:
y = 4x - 23
Explanation:
You can solve this equation using the point slope form:

m is the slope, y1 is the y of the point, and x1 is the x of the point.
Factor those into the equation:
y - (-3) = 4(x - 5)
Simplify y - (-3) into y + 3
y + 3 = 4(x - 5)
Multiply 4 and (x - 5)
y + 3 = 4x - 20
Now subtract 3 from both sides to find the equation.
y = 4x - 23
Hope this helps!