A calculator can show you the answer to these very quickly.
Answer:
8z-2.5y
Step-by-step explanation:
5+3=8
1/2+ 2= 2.5
z varies inversely
so z=a/x^2
9=a/(2/3)^2
9=a/(4/9)
9=9a/4
a=4
z=4/x^2
z=4/(5/4)^2
z=4/(25/16)
z=64/25
It's an odd function.
x=-5
please refer to the picture for explanation
