Question

Mrs. Beatty buys sketchbooks and puzzles. Each sketchbook costs $1 and each puzzle costs $3. Which ordered pair represents the cost of 3 sketchbooks as the

Answer 1

(3,9)

Explanation:

The input (x) is the number of sketchbooks purchased, output (y) is the cost.
I see two linear equations.

y= 1x

or

y= 3x

The latter equation illustrates the cost of sketchbooks.