IXL | Evaluate a linear function: word problems

This equation shows how Shadow the puppy's weight varies with age.

p = 5a

The variable a represents Shadow's age in months, and the variable p represents Shadow's weight in pounds. How heavy was Shadow at 4 months old?

pounds

ref_doc_title.

Learn with an example

question

This equation shows how the total number of pieces Tommy has learned depends on the number of weeks he has taken piano lessons.

p = 2w

The variable w represents the number of weeks he has taken piano lessons, and the variable p represents the total number of pieces he has learned. After 4 weeks of piano lessons, how many total pieces will Tommy be able to play?

pieces

solution

Tommy has taken piano lessons for 4 weeks. Plug in w = 4.

Plug in w = 4

2 × 4

Plug in w = 4

Multiply

After 4 weeks of piano lessons, Tommy will be able to play a total of 8 pieces.

Looking for more? Try these:

Lesson: Evaluating expressions

Lesson: Solving equations

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

CC.1Evaluate a linear function

M.8Solve two-step equations

Lesson: Evaluating expressions

Lesson: Solving equations

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!