IXL | Relationships between two variables: word problems

Read the following description of a relationship:

Mark's parrot is 9 years older than his cat.

Let

represent the cat's age and

represent the parrot's age.

Find the value of

when

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Learn with an example

Read the following description of a relationship:

In a board game, the player who makes the last move receives a 5-point bonus for ending the game.

Let

represent the score before the endgame bonus and

represent the final score.

Find the value of

when

Read the description of the relationship between the score before the endgame bonus,

and the final score,

In the board game, the player who makes the last move receives a 5-point bonus for ending the game.

In this relationship,

is the input, and

is the output. So, you can find

by adding 5 to

Express this relationship as an equation.

Substitute 2 for

in the equation to find the value of

When

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