A parabola opening up or down has vertex (0, – 3) and passes through (10,2). Write its equation in vertex form.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

the correct answer is 1: 2

step-by-step explanation:

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