Math 3 - Quiz #1 (Term 4)

Is this graph a function and how can you tell?

• Yes its a function cause it doesn't cross itself
• No it's not a function because it goes through the origin
• No it's not a function because the x value 4 has y values of  -2 & 2
• No it's not a function because the y value 4 has x values of  -2 & 2

Is this mapping a function and how can you tell?

• Yes its a function cause all the numbers have lines
• No it's not a function because there a 5 in both ovals
• No it's not a function because the x value 5 has y values of  2 & 9
• No it's not a function because the y value 5 has x values of  2 & 9

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}

Which relations represent a function?

• 
• 
• 
• 
• 

What is a function?

• A special relation in which each member of the range is paired with exactly 1 member of the domain.

• A special relation in which each member of the domain is paired with 2 members of the range.

• A special relation in which each member of the domain is paired with 3 members of the range.

• A special relation in which each member of the domain is paired with exactly 1 member of the range.

How long is the ball's height decreasing?

• 2 seconds

• 5 seconds

• 6 seconds

• 3 seconds

What is the range of the graph?

• 1 ≤ x ≤ 5

• 1 ≤ y ≤ 4

• 1 ≤ y ≤ 5

• 1 ≤ x ≤ 4

Is the graph increasing or decreasing?

• Increasing

• Decreasing

• Both; increasing if x < 3, and decreasing is x > 3

• Both; decreasing if x < 3, and increasing is x > 3

What is the y-intercept?

• None
• (0,3)
• (3,1)
• y = -1

Define Minimum

• The highest y-value on the graph

• Where the parabola touches or intersects the y-axis

• Where the parabola touches or intersects the x-axis, also called the x-intercept

• The lowest y-value on the graph