I have been working on this for over an hour and cannot figure it out. Is it easier than I am making it? Please explain.
2007-02-28 02:56:03 · 4 answers · asked by Nancy H 1 in Education & Reference ➔ Homework Help
Its easy, all you do is place -9 where x is in the equation. Then you follow PEMAS so you would multiply -9 with 2 and you would get -18. Then you subtract -18 with -1 and because they are both negatives the sign changes and you add it and the answer is -19.
2007-02-28 03:07:50 · answer #1 · answered by dancingqueen 5 · 0⤊ 0⤋
f(-9)=2(-9)-1
=-18-1
=-19#
2007-02-28 11:00:18 · answer #2 · answered by angerlic_layer L 1 · 0⤊ 0⤋
substitute X for -9......2(-9)-1=19
2007-02-28 11:01:07 · answer #3 · answered by Lisa 2 · 0⤊ 1⤋
You just plug -9 into the function.
f(x)= 2x-1
f(-9)= 2(-9)-1
f(-9)= (-18)-1
f(-9)= -19
its really hard to explain it in words...
2007-02-28 11:07:07 · answer #4 · answered by audiofreedom 2 · 0⤊ 0⤋