Suppose f(x) is a quadratic function with only one root at x=2 and goes through the point (1,3). Write the equation for this function.

Question

help.

Answer 1

f(x) = a(x - 2)²; f(1) = a(1 - 2)² = 3; a = 3; f(x) = 3(x - 2)²

Answer 2

y = a(x-2)^2

3 = a

y = 3(x-2)^2

y = 3x^2 -12x +12