Question

If y is 2.5 when x is 5 and y varies directly with x find y when x is 10

Answer 1

Explanation:

y=2.5 and x=5

Then if x=10 then y=5

To solve this, you find out how much x changed, and then do the same thing to y.

So in this case, x=5 and then x=10. so that means we multiplied by 2.

So because y=2.5 and you multiple that by 2 you get y=5

Hope this helps!