Find Solutions Using the Discriminant Slides

The discriminant is 0, what kind of solutions does the quadratic have?

• 1 real solution

• 2 real solutions

• 2 imaginary solutions

• 2 real irrational solutions

Tags

CCSS.HSA-REI.B.4B

If the discriminant is zero you will have

• no real solutions

• two real solutions

• 1 real solution

Tags

CCSS.HSA-REI.B.4B

Match the following

• equal to zero

• If the discriminant of a quadratic equation is equal to 5, then the graph will have two ____?

• positive

• If the graph of a quadratic function does not touch the x-axis at all, then the solutions would be......?

• imaginary

• If the quadratic equation has two solutions, then the discriminant would be_____?

• x-intercepts

• If the graph of a quadratic function touches the x-axis only once, then the discriminant would be____?

Tags

CCSS.HSA-REI.B.4B

Find the discriminant and determine how many zeros exist for the following function: 
x² - 6x + 5 = 0

• -56; No real roots

• 4; Two real solutions

• -56; Two real solutions

• 4; No real roots

Tags

CCSS.HSA-REI.B.4B

How many solutions would a quadratic have if D = 0

• 2 Complex Solutions

• 1 Real Solution

• 2 Real Solutions

Tags

CCSS.HSA-REI.B.4B

Make a true statement about about Graph A

The discriminant is ​ (a)  

There will be ​ (b)  

• zero

• one real solution

• positive

• negative

• two complex solutions

• two real solutions

Which graph has a discriminant = 0?

• None of them

• Red

• Blue

• Green

Use the discriminant to determine the number of real solutions: -10x^2-7x+8=0

• 0

• 2

• Wait there are imaginary answers now.........

• I got to go cry alone in my room now......Math is hard.

Tags

CCSS.HSA-REI.B.4B

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

• Positive

• Negative

• Zero

If the discriminant is negative, then the solution will be

• one real solution

• two real solutions

• no real solution

Tags

CCSS.HSA-REI.B.4B