Quadratic Equations (Grade 9)
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Quadratic Equations
1.
The graph of a quadratic function is called a(n)
- line.
- hyperbola.
- cubic.
- parabola.
2.
Which of the following is a quadratic function?
- [math]f(x)= x^3 + 5x[/math]
- [math]f(x)= x-5x[/math]
- [math]f(x) = x-9[/math]
- [math]f(x) = x^2+3x + 6 [/math]
3.
Solve for x.
[math]x^2 + x=12[/math]
[math]x^2 + x=12[/math]
- 6, -2
- -3, -4
- -4, 3
- -2, 6
4.
Find the solution of the following equation.
[math]x^2 - 3x - 40 = 0[/math]
[math]x^2 - 3x - 40 = 0[/math]
- x = -5, -8
- x = -5, 8
- x = 5, -8
- x = 5, 8
5.
[math]2x^2 - x - 3 = 0[/math]
- [math]3, -1[/math]
- [math]-1, 3/2[/math]
- [math]-1, 3[/math]
- [math]1/2, 3[/math]
6.
[math]b^2+8b +7 = 0[/math]
- 1 and -7
- 1 and 8
- 1 and 7
- -1 and -7
7.
[math]x^2 + x - 6=0[/math]
- 4,-1
- 3,-2
- -6,1
- 2,-3
8.
Which expression has only one solution?
- [math]x^2 - x - 20[/math]
- [math]x^2 + 10x + 7[/math]
- [math]x^2 - 12x + 36[/math]
- [math]x^2 + 13x + 42 [/math]
9.
Complete the square. (Do not solve for x.)
[math]x^2 + 10x + ? [/math]
[math]x^2 + 10x + ? [/math]
- no answer available
- [math]100[/math]
- [math]25/2[/math]
- 25
- [math]25/4[/math]
10.
Graph the following equation:
[math]f(x) = x^2 - 3[/math]
[math]f(x) = x^2 - 3[/math]

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