Question

if y is directly proportional to x^2 and y=1/8 when x=1/2, what does x equal when y=9/2?

Answer 1

1/8 is to 1/2 squared, so 9/2 is equal to what squared. (1/2)^2 times (9/2)= 9/8, 9/8 divided by 1/8 is 9. Square root of 9 is 3.