Question

Suppose y varies directly with x, and y=24 when x =8 ,what is the value of y when x =10

Answer 1

okay so equation is y =kx

Answer 2

first they gave you y and x values
so replace x and y and find k first
x = 8 and y = 24 replace that and solve for k

Answer 3

I do these a little different from other people.
if they vary directly, then it is a proportion.
24/8 = y/10 -- cross multiply, then solve for y

Answer 4

y x so 24x10.8 = ? so 240/8 so its 30
24 8
? 10