4. Determine whether each equation defines y as a function of x. a) x4 + y = 16
b) x2 + y2 = 100
c) x+y3 = 64

Line u passes through points (-52, -18) and (-29, 53). line v passes through points (90, 33) and (19, 56). are line u and line v parallel or perpendicular?

What is the period of the sinusoidal function ?

Which graph shows the solution set of x^2+4-12x/> 0