Question

If p varies directly with q, and p = 8 when q = 2, what is the value of p when q = 7?

A.p=40

B.p=28

C.p=21

D.p=100

Answer 1

Varies directly means p=kq, \(\frac{p}{q}=k\)

Answer 2

So \(k=\frac{8}{2}=4\)
Now when q=7, and we've got k,
p=kq
p=(4)(7)=?

Answer 3

oh thank you

Answer 4

wow you are really smart, wish i was

Answer 5

Yw

Answer 6

wait i have another question would this have the same formula as the one before?

Answer 7

The value of y varies directly with x2, and y = 64 when x = 4.

What is the value of y when x = 6?

Answer 8

all i need to know if it still has the same formula