nothanksok nothanksok

13-07-2017
Mathematics

contestada

Given the function f(x) =2x^2 -6, find the value f(-1) please! :)

-8
-4
10

Respuesta :

jimthompson5910 jimthompson5910

13-07-2017

Plug in x = -1 to get...

f(x) = 2*x^2 - 6
f(x) = 2*(x)^2 - 6
f(-1) = 2*(-1)^2 - 6 ... note how each x is replaced with -1
f(-1) = 2*(1) - 6
f(-1) = 2 - 6
f(-1) = -4

Answer is choice B) -4

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