IXL | Write a two-variable equation

Read the following description of a relationship:

Tom has a collection of

superhero lunch boxes. He decides he'll buy one new lunch box every year for his birthday.

Let

represent the number of years from now and

represent the total number of lunch boxes in Tom's collection.

This relationship can also be shown in a table. Complete the equation that represents the relationship between

and

y	b
5	14
6	15
7	16
8	17

ref_doc_title.

Learn with an example

question

Read the following description of a relationship:

In a board game, the player who makes the last move receives a

-point bonus for ending the game.

Let

represent the player's score before the end-of-game bonus and

represent the player's final score.

This relationship can also be shown in a table. Complete the equation that represents the relationship between

and

s	f
3	13
4	14
5	15
6	16

solution

Read the description of the relationship between the player's score before the end-of-game bonus,

and the player's final score,

In a board game, the player who makes the last move receives a 10-point bonus for ending the game.

In this relationship,

is the input, and

is the output. So, you can find

by adding 10 to

Express this relationship as an equation.

You can use the table to check your answer.

s	f
3	13
4	14
5	15
6	16

In each row of the table, plug the value from the

column into the equation. See if you get the value in the

column.

s	s + 10	f
3	3 + 10 = 13	13
4	4 + 10 = 14	14
5	5 + 10 = 15	15
6	6 + 10 = 16	16

The values in the

column are the same as the values in the

column.

This is the equation for the relationship:

Looking for more? Try these:

Lesson: Writing algebraic expressions

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

CC.9Write a two-variable equation from a table

Lesson: Writing algebraic expressions

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!