A. 7/4
Rate of change is the same as slope, it is how the line has to go to get from the first to the second point. The slope function is y2-y1 / x2-x1. So we end up with 8-1/5-1 making 7/4
Answer: A) 1, 2, 4
Step-by-step explanation:
The range of a function is every y value.
Answer:
9+9/x
Step-by-step explanation:
f(g(x))= 9/x/x+1
=9/x ×(x+1)
=9x+9/x
=9+9/x
Step-by-step explanation:
7-3cosx=9sin²x
[sin²x=1-cos²x]
=>
7-3cosx=9-9cos²x
=>
9cos²x-3cosx-2=0
=>
let cosx=t
9t²-3t-2
by quadratic formula,
t=(3±9)/2·9
=> t=2/3 or t=-1/3
thus,
x=acos(2/3) or x=π- acos(1/3)
Statements A and C are true