Assume y varies directly as x.

If y = 7 when x = 3, find x when y = 21.

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20

The spanish club held a car wash to make money. the equation y=5x represents the amount of money y club members made for washing x cars. identify the constant of proportionality. then explain what it represents in this situation