If y varies directly as x, and y is 409 when r and y is r when x is 4, what is the numeric constant of variation in the relation

C, 100.

Step-by-step explanation:

In order to find your constant or variation it is r (Constant rate of change) = y divided by x. or r= y/x. Y is 400 and X is 4. 400 divided by 4 is 100. Therefore, your COC is 100. Hope this helps!

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.