Use the function shown above to find the value of f(-2).
2007-01-02 15:04:16 · 10 answers · asked by soccergrl8128 1 in Science & Mathematics ➔ Mathematics
f(x)= 2x + 1
f(-2)=2*(-2)+1
f(-2)=-4+1
f(-2)=-3
2007-01-02 15:10:52 · answer #1 · answered by yupchagee 7 · 15⤊ 0⤋
2(-2)+1=-3
2007-01-02 15:12:52 · answer #2 · answered by James R, the seeker 1 · 1⤊ 0⤋
*The x-variable represents a number/value. In this case, the problem gives you the number which, is -2 >
First: replace -2 with the x-variable >
f(-2)= 2(-2) + 1
f(-2) = - 4 + 1
f(-2)= -3
2007-01-02 15:17:56 · answer #3 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
2(-2) +1
-4 + 1
= -3 is the answer when f(-2)
2007-01-02 15:06:24 · answer #4 · answered by michael45672007 3 · 1⤊ 0⤋
to find value of f(-2), substitute -2 wherever there is an 'x'.
therefore, f(-2)
= 2(-2) + 1
= -4 + 1
= -3
2007-01-02 15:07:13 · answer #5 · answered by Anonymous · 1⤊ 0⤋
f(-2)=2(-2)+1
f(-2) =-4+1
f(-2) = -3
2007-01-02 15:22:19 · answer #6 · answered by daddyspanksalot 5 · 0⤊ 0⤋
replacce all x with -2 and calculate the resulting sum
2007-01-02 16:05:56 · answer #7 · answered by gjmb1960 7 · 0⤊ 0⤋
f(-2)=2(-2)+1
f(-2)= -4+1
f(-2)= -3
2007-01-02 15:06:14 · answer #8 · answered by 7 · 1⤊ 0⤋
I did it a little different.
you have to have the same f(x)=2x+1x=3
2007-01-02 15:13:35 · answer #9 · answered by karen v 6 · 0⤊ 1⤋
f(-2)=2(-2)+1
f(-2)=-4+1
f(-2)=-3
2007-01-02 15:12:20 · answer #10 · answered by marinescheerleader 2 · 1⤊ 0⤋