Which of the lines below is perpendicular to y= -2/5 A. y=-5/2x-9
B. y=-2/5x+8
C. y=5/2x+1
D. y=2/5x-3

(a) solve h+2/6 = h-3/4(b) solve the following simultaneous equations. 2x = y + 66x - 2y = 13x = ? y = ?

Which is the focus of a parabola with equation y2=4x

The table below shows the function f. determine the value of f(3) that will lead to an average rate of change of 19 over the interval [3, 5]. a. 32 b. -32 c. 25 d. -25