
Andrew M. answered 03/24/17
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
y=4.3x^2+2X-1
x=-2: y=4.3(-2)2+2(-2)-1 = 12.2 ... (-2,12.2)
x= 1: y=4.3(1)2 + 2(1) - 1 = 5.3 ... (1, 5.3)
rate of change
m = (12.2-5.3)/(-2-1) = 6.9/(-3) = -2.3