OK, so my daughter is in this bizarre math class where they don't really put equations in the book. So I was helping her and I can't remember WHY I'm getting the right answer, so maybe I can get some guidance.

The question states to write the equation of a function that has x intercept of 2 and 4.

So I KNOW that it's (x-2)(x-4) = 0 or x^2 -6x + 8 = 0

But anyone remember WHY?

The question states to write the equation of a function that has x intercept of 2 and 4.

So I KNOW that it's (x-2)(x-4) = 0 or x^2 -6x + 8 = 0

But anyone remember WHY?