Question

summary
coordinate axes can be used to graph the locations of ordered pairs.
tables can be used to show ordered pairs.
you can find ordered pairs from equations that have two variables.
you can use the vertical line test on a graph to tell if a set of ordered pairs is a function.
to answer questions about a function, you can use an equation or a table of ordered pairs.
a bar graph shows information from a table.

vocabulary review
complete the sentences with words from the box.

1. a dot that shows the location of a point is called a _____.
2. perpendicular number lines are called _____.
3. coordinate axes cross at the _____.
4. you can use _____ to give the location of points on the coordinate plane.
5. a _____ is a group of ordered pairs for which no two pairs have the same first number.
6. you use the _____ to tell if the graph is a function.
7. a plane with two perpendicular number lines is called a _____.
8. you can use _____ for an equation that is a function.
9. a graph that uses bars to show information is called a _____.

vocabulary box (left):
coordinate axes
coordinate plane
origin
ordered pairs
graph of an ordered pair
function
vertical line test
function notation
bar graph

Explanation:

1.

A dot representing a point's location is the graph of an ordered pair.

Perpendicular number lines used in coordinate systems are coordinate axes.

Coordinate axes intersect at the origin (where both axes have value 0).

Answer:

graph of an ordered pair

2.