Quadratics Formats

If the zeros of a quadratic function are (1, 0) and (9, 0), what is the equation of the axis of symmetry?

• x = 1

• x = 9

• y = 0

• x = 5

• cannot be determined from this information

Tags

CCSS.HSF-IF.C.7A

If there is only one zero of a quadratic function located at (3.5, 0), what is the equation of the axis of symmetry?

• x = 7

• x = 3.5

• y = 0

• x = 0

• cannot be determined from this information

Tags

CCSS.HSF-IF.C.7A

If a quadratic equation in standard form has a negative c-value, the parabola opens downward.

[y = ax² + bx + c]

• TRUE, "c" controls the direction of the parabola.

• FALSE, "a" controls the direction of the parabola.

Tags

CCSS.HSF-IF.C.7A

Solve for x.  Round to the nearest hundredth if necessary.
3x² = 16x + 12

• x = -.67, 6

• x = -6, .67

• x = 3.33, 18

• x = -3.33, 18

Tags

CCSS.HSA-REI.B.4B

Solve for x.  Round to the nearest hundredth if necessary.
2x² = -x + 3

• x = -1, 1.5

• x = 1.5, -1

• x = 1, 1.5

• x = -1.5, 1

Tags

CCSS.HSA-REI.B.4B

Factor: 49x² - 100

• (49x + 100)(x - 1)

• (7x - 10)(7x + 10)

• (49x - 10)(x + 10)

• (7x -10)(7x - 10)

Tags

CCSS.HSA.APR.C.4

Factor:   3x²- 6x - 24

• (3x - 8)(x + 3)

• (3x + 4)(x - 6)

• 3(x - 2)(x + 4)

• 3(x + 2)(x - 4)

7x² - 26x - 8 = 0

• x = -1 and x = -7/8

• x = 4 and x = -2/7

• x = -4 and x = 2/7

• x = 4 and x = -7/2

Tags

CCSS.HSA-REI.B.4B

(x + 1) ² = 25

• ± 5

• 4  or  -6

• -4  or  6

• ± 4

Tags

CCSS.8.EE.A.2

Solve
(x+3)²-5 = 9

• -3±√14

• 3±√14

• ±11

• ±5

Tags

CCSS.8.EE.A.2