Linear Functions Review

What is the definition of a function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Determine whether the relation is a function.

• Yes
• No

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{0, 1, 2, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

Describe the slope of the line.

• negative slope

• 0 slope

• positive slope

• undefined slope

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

What type of slope is this?

• Positive

• Negative

• Zero

• Undefined

For the given equation, what will the value of x equal when y = -5

12x + 6y = -18

• x = 1

• x = 2

• x = 3

• x = 4

For the given equation, what will the value of y equal when x = 6

3x - 8y = 2

• y = 1

• y = 2

• y = 3

• y = 4

Give the x-intercept
3x + 8y = 24

• (8, 0)
• (0, 8)
• (3, 0)
• (0, 3)

What is the y-intercept shown on the graph?

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