6th Grade Math Textbook, Progress

To find how many centimeters long, write an equation ormake a graph.

Let xrepresent the number of inches and yrepresent the

number of centimeters.

Notice that each y-value is 2.54 times the corresponding

x-value. So the equation y
2.54x can be used to find the

length in centimeters for any length in inches.

Yo u can also use a graph to find the

y-value when the x-value is 5.


Graph the data in the table.

Then connect the points.


Extend the line as needed.

Then use the graph to find

the value of y when x
5.

When x
5, y 
13.

Michael’s puppy was no more

than 13 cm long.

Visualize yourself in the problem as you reread it.

List the facts and the question.

Facts: Puppy is no more than 5 inches long at birth.

Question:How many centimeters long was the puppy?

Michael’s puppy was no more than 5 inches long at birth.

Michael knows that 1 inch is equal to 2.54 centimeters.

How many centimeters long was the puppy?

Problem-Solving Strategy:

Use More Than One Strategy

14-10

For 5 inches of length, x
5. Then y
2.54• 5 
12.7.

So 5 inches 
12.7 centimeters.

Michael’s puppy was no more

than 12.7 cm long. ( )

number of inches, x 1 2 3 4

number of centimeters, y 2.54 5.0 8 7.62 10.16

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