Given the function f(x) =2x^2 -6, find the value f(-1) please! :)
-8
-4
10
1 answer:
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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