Question

From problems 1-4 state whether or not the equation is a quadratic equation

1. y = x^(2) + 3x - 15
2. y = 6x^(5) - 0.7 x (pi symbol)
3. y = 9x
4. y = (-4/3)x^(2)

(Chapter 61 in Big Fat Notebook Algebra)

Answer 1

1. Quadratic

2. Not quadratic

3. Not quadratic

4. Quadratic

Explanation:

A quadratic equation will have a degree of 2. The degree is the highest power of the x term in the equation.

Therefore a quadratic equation will be of the form

y = ax² + bx + c,

where a, b and c are constants

a ≠ 0 but either b or c or both can be 0

Answer 2

The answer would be 4