Consider the expression 4a-12 right three different expressions that if set equal to 4a -12 would result in the equation having infinity solution

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8

Ya i could just need to know what type of math