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Which function is quadratic? A {=5.3), (-2.0), (1, 3). (4. 6)) B {(-2, 12), (0.2), (2.-8). (4, -18)} C {(0, -126), (4, -14
Question
Which function is quadratic?
A {=5.3), (-2.0), (1, 3). (4. 6))
B {(-2, 12), (0.2), (2.-8). (4, -18)}
C {(0, -126), (4, -14), (8, 2).(12,18)
D {(0, -10), (1.-7), (2, 2), (3. 17)}
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Mathematics
3 years
2021-09-05T16:54:28+00:00
2021-09-05T16:54:28+00:00 1 Answers
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Answer:
step 1. A, B,D are incorrectly written as these are not all coordinates. they must be written (x, y)
step 2. so the question becomes is C a quadratic
step 3. The x values must be evenly spaced. the x values are evenly spaced by a difference of 4
step 4. write out the y values: -126, -14, 2, 18
step 5. write out the differences: 140, 16, 16
step 6. write out the differences: -124, 0.
step 7. after doing this twice the numbers nust be the same for this to be a quadratic which they aren’t
step 8. C is not a quadratic.