F25 Alg 1B Lesson 10.3 Discriminant

1 What does the discriminant tell us?

The discriminant is

Which of the following best describes the role of the discriminant in a quadratic equation?

To prepare to do the quadratic formula,

set one side equal to zero:

-2x² = 7x - 4

When in standard form, what is the value of a, b and c in this quadratic?

8x² + 3x - 6 = 3x

Determine the value of the discriminant and describe the number and type roots for the following:

x² + 7x + 13

Solve for the discriminant of the given equation -2x² -6x=0

When in standard form, what is the value of a, b and c in this quadratic?

9x² + 4x - 6 = -5x + 8

What is the discriminant and how many solutions would this quadratic have?

-4x² - 8x - 8 = -4

For which values of the discriminant will a quadratic equation have two distinct real solutions? Select all that apply.

How many solutions are there?

How many solutions are there?

When looking at a quadratic graph, the solution(s) are always the _____________.

3 For the function above, is the discriminant positive, negative, or zero?