Discriminant and Quadratic Formula Practice
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the solutions of a quadratic equation are 9 and -9, what is the value of b^2 - 4ac?
0
81
-81
162
Tags
CCSS.HSA-REI.B.4B
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following equations has no real solutions?
x^2 - 8x - 16 = 0
-2x^2 + 5x - 6 = 0
-x^2 + 6x + 1 = 0
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
0
1
2
3
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many non-real solutions do the equations of the following quadratic curves have?
0
1
2
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the value of k for which 16x^2 + 8x + k = 0 has equal roots. Which of the following is correct?
k = 1
k = 2
k = 4
Tags
CCSS.HSA-REI.B.4B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many x-intercepts does the parabola have if b^2 - 4ac = -5?
0
1
2
3
Tags
CCSS.HSA-REI.B.4B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For the graph labeled 'b', determine whether the discriminant b^2 - 4ac is greater than 0, less than 0, or equal to 0.
b^2 - 4ac > 0
b^2 - 4ac < 0
b^2 - 4ac = 0
Tags
CCSS.HSA-REI.B.4B
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