Question

Please help me!!!!!!!!!!!!!!

Answer 1

Answer: $y=-(x-1)^{2} +3$

Step-by-step explanation:

Vertex form of the equation is

y = a(x – h)2 + k, where (h, k) is the vertex.

your vertex is at (1,3)

the equation would be$y=a(x-1)^{2} +3$

Use the through point to find a

$-1=a(3-1)^{2} +3\\-1=4a+3\\-4=4a\\-1=a$

Final Equation would be

$y=-(x-1)^{2} +3$