Page 87 - Math Course 3 (Book 1)

Linear Equations

Solve an Equation for y Graph a Linear Equation

BOOKS Graph y = 5 – x by plotting ordered pairs.
At a local bookstore, hardbacks are on sale for $6
and paperbacks are on sale for $3. Bob has $42 to A B
spend on books. Find four solutions to determine
how many books of each type Bob can buy with
his $42.

A. 0 hardbacks, 42 paperbacks
3 hardbacks, 24 paperbacks
5 hardbacks, 12 paperbacks
7 hardbacks, 0 paperbacks

B. 0 hardbacks, 14 paperbacks C D
1 hardbacks, 12 paperbacks
2 hardbacks, 10 paperbacks
3 hardbacks, 8 paperbacks

C. 0 hardbacks, 42 paperbacks
3 hardbacks, 24 paperbacks
5 hardbacks, 9 paperbacks
7 hardbacks, 7 paperbacks

D. 0 hardbacks, 14 paperbacks Answer
1 hardbacks, 8 paperbacks
2 hardbacks, 2 paperbacks
3 hardbacks, –4 paperbacks

Answer

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