Don't understand this and need to understand for mid-term. Thank you
If f(x) = -8 -2x, find f(-4) correct answer is 0, how do you come to this???
2007-03-29 19:05:22 · 5 answers · asked by whattheheck 4 in Science & Mathematics ➔ Mathematics
f(x) = -8-2x
Therefore to find f(-4) replace x with -4
f(-4) = -8-2(-4) = -8 + 8 = 0
2007-03-29 19:10:08 · answer #1 · answered by naveen 1 · 0⤊ 0⤋
When you are given a function like this one
f(x)= -8 -2x and says to find f(-4), it just means that you need to substitute x by -4... so
f(-4)=-8 -2(-4)= -8 + 8 = 0
2007-03-30 02:12:20 · answer #2 · answered by JESV 2 · 0⤊ 0⤋
f(x)= -8 -2x, find f(-4)
we can substitute x for -4.
Therefore, f(4)=-8-(-4)
=-8+8
=0
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2007-03-30 02:12:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
f(x)=-8-2x
if f(-4),
then replace all x with -4
thus,
f(-4)=-8-2(-4)
f(-4)=-8+8
f(-4)=0
2007-03-30 03:03:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
f(x) = - 8 - 2 x
f(- 4) = - 8 - 2 (-4)------- now -(2) x (-4) = 8
f(- 4) = - 8 + 8
f(-4) = 0
2007-03-30 02:33:43 · answer #5 · answered by Como 7 · 0⤊ 0⤋