The table below shows the outputs y for different inputs x:
input
(x) 1 1 3 3
output
(y) 4 2 12 6
part a: does the table represent y as a function of x? justify your answer.
part b: the total cost f(x), in dollars, for renting a paddleboat for x hours is shown below:
f(x) = 20 + 10x
what is the value of f(120), and what does f(120) represent?

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb

it's a proportional graph.

step-by-step explanation:

8 x 5 = 40         (and you have -8x and -5y)

x= absiss

y= orderly

so you have a proportional graph.