The value of y varies directly with the value of x. If y=10 when x=7, what is y when x=112?

Answer 1

y = kx

10 = k(7)

k = 10/7

y = 10x/7

y = 10(12)/7

y = 120/7

y = 17 1/7 when x = 12

although when you get a fractional answer,

that suggests a possible mistake somewhere,

so recheck the arithmetic