Algebra Practice

13y - 18 = -5y + 36

• y = 3

• y = -3

• y= 9

• y = -9

Solve for x:
4(1-x) + 3x = -2(x+1)

• x = -6

• x = 6

• x = 3

Use the picture to find the vertex and axis of symmetry

• Vertex (3,8) Axis x = 3

• Vertex (3,8) Axis y = 3

• Vertex (8,3) Axis x = 3

• Vertex (8,3) Axis y = 3

What is the domain and the range for the graph?

• Domain : -2 ≤ x ≤ 2
  Range : 0 ≤ y ≤ 4

• Domain : 0 ≤ x ≤ 4
  Range : -2 ≤ y ≤ 2

• Domain : All real #s
  Range : y ≤ 4

• Domain : -2 ≤ x ≤ 2
  Range : y ≤ 4

If the sum of two numbers is 20 and their difference is 4, what are the numbers?

• 8 and 12

• 10 and 10

• 11 and 9

• 12 and 8

Answer explanation

The correct numbers are 8 and 12 because when you add them, you get 20 (8 + 12 = 20) and when you subtract them, you get 4 (12 - 8 = 4).

If you multiply a number by 6 and then add 4, the result is 40. What is the number?

• 4

• 5

• 6

• 7

Answer explanation

To find the number, subtract 4 from 40 to get 36. Then divide 36 by 6 to get the number, which is 6. Therefore, the correct number is 6.

• Step 1: Square both sides
• Step 1: add 9 to both sides
• Step 1: cube both sides
• Step 1: divide both sides by 4

Evaluate 5 -|c+1| if c= -4.

• 0

• 2

• 8

• 10

Evaluate ∛1

• 1

• 2

• 3

• 4

∛216

• 6

• 72

• 108

• 4