Question

Suppose y varies directly with x and y=12 when x=6. Write an equation realting x and y.

Please help, do not understand.

Answer 1

when you have a statement such as
"Suppose y varies directly with x "

you can write it as y = kx, where k is some constant.
In most cases you will be given one relations that let's you find the value of k, sure enough: x=12 and x=6

so 12 = k(6)
k = 2

then your equation will be y = 2x

Answer 2

thanks so much, very helpful

Answer 3

If your second question is find the slope of the line that passes through (-2,1), (1,10) all the answers are B,A,C,A,D,C,C,A.

Answer 4

Panda is 100%

Answer 5

Thank you Panda!