Question

emma wants to enlarge a square photo and print it to a square canvas. the side length of the canvas is 12 in. the scale from the canvas to the photo is 4 in. to 1 in. what is the side length of emmas photo? show your work.

Explanation:

Step1: Identify the scale - factor relationship

The scale from the canvas to the photo is 4 in. to 1 in., which means the side - length of the canvas is 4 times the side - length of the photo. Let the side - length of the photo be $x$ inches and the side - length of the canvas be $y$ inches. The ratio is $\frac{y}{x}=4$.

Step2: Set up the equation and solve

We know that $y = 12$ inches (side - length of the canvas). Substitute $y = 12$ into the ratio equation $\frac{y}{x}=4$. We get $12\div4=x$.

Answer:

3 in.