Question

A rectangle that is 2" x 3" has been scaled by a factor of seven suppose you want to scale the copy back to its original size what scale factor should you use

Answer 1

Answer:

Scale factor of $\frac{1}{7}$.

Step-by-step explanation:

scale = $\frac{scaled length}{actual length}$

The rectangle has been scaled by a factor of seven implies that its real dimensions has been multiplied by seven. Therefore, to scale the copy back to its original size, its dimension should be multiplied by a scale factor of $\frac{1}{7}$.

Example:

when the scale is 7;

2 x 7 = 14

3 x 7 = 21

when the scale is $\frac{1}{7}$;

14 x $\frac{1}{7}$ = 2

21 x $\frac{1}{7}$ = 3