Intro to Functions Video

What is the first step in plotting the ordered pair (2, 5) on a coordinate plane?

• Move 5 units down

• Move 2 units up

• Move 2 units to the right

• Move 5 units to the left

Which of the following is true about a function?

• Y-values must be the same

• X-values can repeat

• Every x-value has a unique y-value

• Every y-value has a unique x-value

What does the vertical line test help determine?

• If a graph is a relation

• If a graph is a line

• If a graph is a function

• If a graph is a circle

How many different y-values are there in the range of the graph if the ordered pairs are (4, 1), (1, 4), and (5, 7)?

• 1

• 2

• 3

• 4

Which ordered pair can be added to a relation to keep it a function if the existing x-values are 7, 3, and -2?

• (7, 0)

• (6, 5)

• (3, 14)

• (-2, 11)