^^contiued question
Is the function increasing or decreasing over the interval [2,7]?
Give the function:
f (x)= -2x+4, 0 (greater or less than) x (greater or equal to) 8
-5x+11, x (less than or equal to) 8
(I have soo much trouble with these!)
2 answers
f(x) =
{ -2x+4 for x≤0 or x≥8
{ -5x+11 for 0 < x < 8
so, on the interval [2,7] the slope is -5, so decreasing
You should always graph functions if you are not sure.
{ -2x+4 for x≤0 or x≥8
{ -5x+11 for 0 < x < 8
so, on the interval [2,7] the slope is -5, so decreasing
You should always graph functions if you are not sure.