So Noel puts 754 cups of water into his/her recipe
If the discriminant is 0, then you'll have exactly one root. This is a double root since the root repeats itself.
Example: y = (x-5)^2 = x^2-10x+25 has a double root at x = 5
I believe it's 37CM, I had that question on my finals last year.
Substitute x = 3 in any given equations. I will do in y = - x + 1
Therefore the answer is (3,-2)