Quadratic function defined by the points

Question

Write in standard form the quadratic function defined by the points (0,5), (5,0), and (3,-4). 

Answer 1

y = ax² + bx + c

5 = c                    for (0, 5)

0 = 25a + 5b + 5   for (5, 0)

-4 = 9a + 3b + 5   for I3, -4

 

Can you solve the system?