Mathematics Chapter Test Q1

Which of the following describes a polynomial equation of degree 2 that can be expressed in the form ax²+ bx + c = 0, where a, b, c are real numbers and a ≠ 0?

• Cubic Equation

• Quadratic Equation

• Linear Equation

• Quadratic Inequality

Grace is trying to determine which of the following equations represents a quadratic equation in her math homework.

• 2s² + 4s - 1

• 3t - 7 = 2

• x² + 5x - 4 = 0

• 2x² - 7 x ≥ 3

Nora is studying quadratic equations and comes across the equation 3x² + 7x - 4 = 0. She wonders, which part of this equation represents the quadratic term?

• x²

• 7x

• 3x²

• -4

During a math competition, four students were given different equations to solve. One of the equations is NOT a quadratic equation. Can you identify which one?

• 2x² + 5x - 3 = 0

• 3x(x-2) = 10

• (2x+5)(x-1) = -6

• 2x + x + 2 = 0

Makoy is trying to solve a quadratic equation for his math homework: 3x² + 7x - 4 = 0. He needs to identify the value of a in the equation. What is the value of a?

• 3

• 3x

• 7

• -4

In a quadratic equation 4x² + 8x - 1 = 0, which is the linear term?

• x²

• 8x

• 3x²

• -4

Which is written in standard form of a quadratic equation?

• 3x - 2x² = 7

• - 2x² - 7 = -3x

• -2x² - 7 + 3x = 0

• -2x² + 3x - 7 = 0

Write x² = -12 - 6x in standard form of a quadratic equation.

• x² + 3x + 4 = 0

• x² + 6x + 12 = 0

• x² + 7x + 12 = 0

• x² + x + 12 = 0

Which of the following quadratic equation can be of the form ax² + c = 0?

• 2x² + 3x = 0

• 2x² = 3x

• 2x² + 3 = 0

• 2x² + 3x + 0

These are the following values of a, b and c that Edna and Luisa got when they expressed 5 - 3x = 2x² in standard form. (Edna: a = 2, b = 3, c = -5 ; Luisa: a = -2, b = -3; c = 5) Who do you think got the correct values of a, b and c?

• Edna

• Luisa

• Both are correct

• Both are wrong