IXL | Identify the graph of an equation

This equation describes a relationship between x and

Complete the table and select the graph that shows this relationship.

x	y
2
3
4	7
5	8

ref_doc_title.

Learn with an example

question

This equation describes a relationship between x and

–

Complete the table and select the graph that shows this relationship.

x	y
3
4	2
5
6	4

key idea

Each row in a table of

and

y-values

represents an ordered pair.

An ordered pair

(x,

tells you the location of a point on the coordinate plane.

The
x-coordinate

(x-value)
tells you the horizontal position.
The
y-coordinate

(y-value)
tells you the vertical position.

solution

start of large bold text, Step 1: Complete the table., end of large bold text

There are two missing

y-values

in the table.

x	y
3	?
4	2
5	?
6	4

To find the missing

y-values,

plug the

x-values

from the table into the equation.

Plug in x = 3.

–

Plug in x = 5.

–

Write the missing

y-values

in the table.

x	y
3	1
4	2
5	3
6	4

start of large bold text, Step 2: Draw the graph., end of large bold text

The graph that shows this relationship must have ordered pairs that satisfy the equation:

–

Each row in the table of

and

y-values

represents one of these ordered pairs. Write the ordered pairs in a new column.

x	y	(x, y)
3	1	(3, 1)
4	2	(4, 2)
5	3	(5, 3)
6	4	(6, 4)

Plot a point for each ordered pair.

Now draw a line through these points. The line represents all ordered pairs that satisfy the equation.

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Teacher tools

Work it out

Not feeling ready yet? These can help:

CC.8Complete a table for a two-variable relationship

R.3Graph points on a coordinate plane

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