IXL | Graph a relationship between two variables

Mackenzie needs to memorize vocabulary words for her French class. Her mother helps by quizzing Mackenzie for 10 minutes each night. Let

be the number of nights her mother quizzes her, and let

be the total number of minutes Mackenzie is quizzed.

The equation

represents this relationship. Graph the relationship.

x-axis, Number of nights, y-axis, Total minutes quizzed. Coordinate plane graph with 1 quadrants, x-axis coordinates from 0 to 10, y-axis coordinates from 0 to 50.

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Learn with an example

question

Sally does 10 minutes of stretching each night before going to bed. Let

be the number of nights she stretches, and let

be the total minutes of stretching Sally does.

The equation

represents this relationship. Graph the relationship.

solution

To graph the relationship

first find two points that satisfy the equation. Then, draw the line through those points.

Plug in

to find one point.

(

)

When

then

Write this as an ordered pair,

(

)

Plug in

to find a second point.

(

)

When

then

Write this as an ordered pair,

(

)

Now, draw the line through

(

)

and

(

)

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CC.12Complete a table and graph a two-variable equation

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