As you can see in this picture we have a point on y- axis which is our y-intercept and f(x) so first we should find what WAS the y-intercept before adding k so we can say: f(x) = 2(0) - 3 = -3 so it WAS -3 .... but in this picture is -7 so you have: -3 + k = -7 k = -7 + 3 = -4 so k is equal to -4 :))) i hope this is helpful have a nice day
