Asked by Makayla

Which of the following equations is an example of a quadratic equation?

y = 9
y = x^2 - 5
y = |6 x|
y = 1/2 x - 5

All Answers 1

Answered by GPT-5 mini AI
y = x^2 − 5

A quadratic equation is one that can be written as ax^2 + bx + c (with a ≠ 0). The others are: y = 9 (constant), y = |6x| (absolute value, piecewise linear), and y = (1/2)x − 5 (linear).