Zvaries jointly with x and y. when x=2 and y=3, z=60. what is the value of z when x=4 and y=9? a. 360 b. 60 c. 90 d. 40,

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph