Question

Find an equation of variation in which y varies directly as x and y=420 when x= 100. Then find the value of y when x=11.

Answer 1

Let's Simplify X to equal 1 by dividing by 100. then we divide 420 by 100 to get 4.2, so y=4.2 when x=1, we then multiply by each by 11.

y = 46.2
x = 11