Review Algebra

-50 < 7x + 6 < -8

• x < –8 or x > –2

•   –8 < x < –2

• All real numbers

• No solution

Figure out where these lines intersect:

y = 4x - 9

y = x - 3

• (1, -2)

• (2, 1)

• (1, 2)

• (2, -1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Figure out where these lines intersect:

8x + 10 y = -24

6x + 5y = 2

• (-7, -8)

• (7, -8)

• (-7, 8)

• Infinitely many solutions

Tags

CCSS.8.EE.C.8B

Which type of line has a slope that is undefined?

• Horizontal lines

• All straight lines

• Vertical lines

• Undefined slopes don't exist

Tags

CCSS.8.EE.B.5

Choose the line that has a slope of -1.

• y = -1

• x = -1

• x + y = 9

• x - y = 7

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Write the equation of the line that passes through (0, 2) and (4, 0).

• y = -2x + 4

• y = 4x + 2

• y = 1/2 x + 2

• none of these

What is true about parallel lines?

• They will never intersect.

• The will always intersect.

• They have negative reciprocal slopes.

• They have the same slope.

• They must intersect at a right angle.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Solve the following absolute value inequality:
∣ 2x - 3 ∣ ≤ 5

• - 1 < x < 4

• -1 ≤ x ≤ 4

• x ≤ -1 or x ≥ 4

• x < -1 or x ≥ 4

Distribute (2x - 3)²

• 4x² - 9

• 4x² + 9

• 4x² - 12x + 9

• 4x² - 12x - 9

Tags

CCSS.HSA.APR.C.4

What is the/are the y-intercepts of
 f(x)=3x² - 8x + 2

• (0, 2)

• (0, -2)

• (2, 0)

• (-2, 0)

Tags

CCSS.HSF-IF.C.7A