Quadratic Solutions and Discriminant

How many solutions are there?

• 0

• 1

• 2

• Cannot be determined

What is the axis of symmetry?

• x= 4

• x=3

• x=-3

• Cannot be determined

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

• y-intercept

• vertex

• x-intercept(s)

• axis of symmetry

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

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

• Positive
• Negative
• Zero
• Not Sure

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

• Positive
• Negative
• Zero
• Not Sure

For the function below, is the discriminant positive, negative, or zero?

___________

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

Use the graph to determine the roots.

• -1 and -3
• 1 and -3
• 1 and 3
• -1 and 3

Find the zeros/solutions of this quadratic function from its graph. Select all that apply.

• -4

• 4

• 0

• 2

• -5