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

Scale factor of
`(1)/(7)`.

Explanation:

scale =
`(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
`(1)/(7)`.

Example:

when the scale is 7;

2 x 7 = 14

3 x 7 = 21

when the scale is
`(1)/(7)`;

14 x
`(1)/(7)` = 2

21 x
`(1)/(7)` = 3