The graph of a quadratic function passes through the points (-1,0), (-2,0), and (0,2). Write the quadratic function in general f

Question

Svet_ta [14]

4 years ago

9

The graph of a quadratic function passes through the points (-1,0), (-2,0), and (0,2). Write the quadratic function in general f

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Mathematics

2 answers:

tatuchka [14] · Answer 1 · 2021-12-07T21:35:11+03:00

Answer:

Step-by-step explanation:

You have 3 points and need to find ax2 + bx + c = y. First use (0,2). x is zero, so y = 2 = c. You have c. Now put (-1,0) into the equation. 0 = 1a -b + 2. Rearrange so you get b = a + 2. Now use the other point. a*(-2 squared) + b*(-2) + 2 = 0. Simplify and substitute (a + 2) for b and you will have the answer.

Maslowich · Answer 2 · 2021-12-07T22:39:17+03:00

Maslowich4 years ago

5 0

Answer:

Step-by-step explanation:

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