m = -1 since it is parallel to the given line. Since the equation for the slope of the tangent line its derivative, then dy/dx = m = -1
dy/dx = -8/y = -1
y = 8
Substituting y to the eq of parabola, we will get x = -4
The tangent line passes through point (-4, 8)
Using point-slope formula, we have
y-8 = -1(x+4)
Therefore, the equation of the tangent line is y = -x + 4
