Given the domain {-5, -1, 0, 2},
determine the range for f(x)= -x^2 - 3x + 2
2006-09-07 14:39:37 · 3 answers · asked by Rachel 1 in Science & Mathematics ➔ Mathematics
Hi Rachel
The domain is, simply put, the set of x values that are "allowed" to be substituted into the function f(x).
So, to determine the range, simply substitute each value in the domain into the function and keep track of the answers you get.
ie.
-5 is in the domain, so...
f(-5)= - (-5)^2 - 3(-5) + 2
= -25 +15 +2
= -8
therefore, the value -8 is part of the range.
Now repeat this for the other three values in the domain, to find all the range values.
good luck!
2006-09-07 14:44:30 · answer #1 · answered by whatthe 3 · 1⤊ 0⤋
I call these kinds of problems PLUG AND CHUG. Substitute each value in the domain into your equation and you will have the range.
2006-09-07 22:02:58 · answer #2 · answered by MollyMAM 6 · 0⤊ 0⤋
RAHCEL?
i got that answer hahahaha
plug all the values into x, one at a time of course
youll get for answers
2006-09-07 21:42:05 · answer #3 · answered by Lauren 1 · 0⤊ 0⤋