## Elementary Geometry for College Students (6th Edition)

$y = 0~~$ or $~~y=2$
We can rearrange and then use the GCF to factor the equation: $9y^2 = 18y$ $9y^2 - 18y = 0$ $(9y)(y-2) = 0$ $9y = 0~~$ or $~~y-2 = 0$ $y = 0~~$ or $~~y=2$