IXL | Use an equation to complete a table and a graph

This equation describes a relationship between x and

–

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

x	y
3
4
5
6

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
2
3
4
5

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 four missing

y-values

in the table.

x	y
2	?
3	?
4	?
5	?

To find the missing

y-values,

plug the

x-values

from the table into the equation.

Plug in x = 2.

–

(

)

–

Plug in x = 3.

–

(

)

–

Plug in x = 4.

–

(

)

–

Plug in x = 5.

–

(

)

–

Write the missing

y-values

in the table.

x	y
2	3
3	5
4	7
5	9

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)
2	3	(2, 3)
3	5	(3, 5)
4	7	(4, 7)
5	9	(5, 9)

Plot a point for each ordered pair.

Now draw a line through these points.

The line represents all ordered pairs that satisfy the equation. So, you do not need to show the four points from the table.

Looking for more? Try this:

$Confetti$

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Teacher tools

Work it out

Not feeling ready yet? These can help:

R.3Graph points on a coordinate plane

X.4Complete a table for a two-variable relationship

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