Arithmetic and Algebra Review

What is the y-intercept shown on the graph?

• (0, -2)
• (3, 0)
• (0, 3)
• None of these.

Match the following equations with their rates of change.

• y = -21x + 10

• 21

• y = 3x - 21

• -21

• y = -3x + 7

• 3

• y = 21x + 5

• -3

To find a solution by graphing is to find the point where two lines intersect.

• True
• False

What is the solution to the system?

• (0, 3)
• (1, -1)
• (-3, 1)
• (1, 3)

Find the slope of the line that passes through:
(5, -10) and (5, -4)

• undefined
• 0
• - 14/10
• 10/14

Solve the equation for b: -11 + 3(b + 5) = 7

• b = 1
• b = -1
• b = 3
• b = -3

Solve for x:

7(2x - 4) = 42

• x = 5

• x = 8

• x = 2

• x = 9

Evaluate 3b + 4c if b = 9 and c = 3

• 12

• 27

• 39

• 51

Write an expression that represents: The sum of 6 and x

• x + 6
• 6/x
• x + 4
• 6x

Write an expression that represents: the difference of 100 and a number (a)    

• 100 + w 
• 100 / (6 + w)
• 100  - w
• 100 / 6 + w