II. Solve for the unknown.
1. If x varies directly as y and x =35 when y = 7, what is the value of y when x = 25?​


Sagot :

x = ky

35 = k(7), divide both sides by 7

35/7 = 5, 7/7 = 1

so k = 5,

25 = 5y, divide both sides by 5

25/5 = 5, 5/5 = 1

so y = 5