7575 * 7575 -7575 is what so confused WILL MARK BRAINLIEST , FRIEND REQUEST AND ALSO 45 POINTS PLEASE HELP ASAP

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u. s. dollars for every 100 euros. b) gabriella averages 100 u. s. dollars for every 25 euros. c) gabriella can exchange 75 u. s. dollars for 100 euros. d) gabriella can exchange 100 u. s. dollars for 75 euros.