Y=-2×(-2)+4×+1

Question

Y=-2ײ+4×+1

Answer 1

Is your question how to find the vertex?

 

Here's how.

 

y = -2x² + 4x + 1 has a = -2, b = 4, c = 1. Use the vertex formula h = -b/(2a), k = f(h).

 

So, h = -4/(2·-2) = 1, k = -2(1)² + 4(1) + 1 = -2 + 4 + 1 = 3.

 

The vertex is (h,k) = (1,3).