A1 M8 D4 ET Discriminant

1 The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

1 In the equation

y = x² +5x +7,

match each leading coefficient with its correct letter.

• a=0, b=5, c=7

• a=1, b=5, c=7

• a=7, b=5, c=1

1 What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

2 A function has a discriminant of 4.

How many x-intercepts does it have?

• 0

• 1

• 2

• 4

2 A function has a discriminant of 0.

How many x-intercepts does it have?

• 0

• 1

• 2

• 5

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

• Positive

• Negative

• Zero

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

• Positive

• Negative

• Zero

If the discriminant is equal to 0, how many solutions are there?

• No solutions

• 1 Solution

• 2 Solutions

• Infinite solutions

If the discriminant is equal to -2, how many solutions are there?

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions

What  are the solutions of this graph?

• -2 and 3
• -1/2 and -6
• -2 and -6
• 3 and -6