Question

The vertex of a quadratic is at (4,-2) and the point (2,6) is another point on the graph of the function. Which of the following is the equation of the function in standard form?

Answer 1

Well what can we tell about the positivity or negativity of the graph based on the two points we're given?

Answer 2

I would suggest using the equation y=a(x-h)2+k, where (h, k) is the vertex.

Answer 3

so the equation for that given quadratic equation would be f(x)=2(x-4)^2-2