Summative Test 1.1-Quadratic Equations

It is a polynomial equation of degree two that can be written in the form ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0.

• Linear Equation

• Quadratic Equation

• Linear Inequality

• Quadratic Inequality

Which of the following is a quadratic equation?

• 3x² + 5r – 1

• x² + 4x - 6 = 0

• 5t – 8 = 9

• 4x² – 6x ≤ 2

What is the numerical coefficient of b in the quadratic equation 3x² + 5x - 10 = 0?

• -5x

• -5

• 5x

• 5

What is another word for solutions of quadratic equation?

• y-intercepts

• roots

• vertex

• axis of symmetry

What number must be added to x² - 8x to make it a perfect square trinomial?

• 4

• 9

• 16

• 64

In the equation x² +5x +7= 0, match each leading coefficient with its correct letter for a, b and c.

• a=0, b=5, c=7

• a=1, b=5, c=7

• a=7, b=5, c=1

• a=1, b=-5, c=7

What do you call b²-4ac?

• roots

• equation

• discriminant

• quadratic formula

What is the sum of the roots of the quadratic equation

x² + 6x − 14 = 0?

• -7

• -6

• 6

• 14

What is the nature of the roots of the quadratic equation if the value of its discriminant is zero?

• The roots are not real

• The roots are rational and not equal.

• The roots are irrational and not equal.

• The roots are rational and equal.

What is 2x ( x - 6) = 10 in standard form of quadratic equation?

• 2x² + 2x +10=0

• 2x² +2x = 10

• 2x² – 12x -10 = 0

• 2x² +12x = 10