Question

Multiple Choice For Exercises 16 and 17, What is the percent reduction or enlargement that will results if rule is applied to a figure on a coordinate grid?

16. (1.5x, 1.5y)
A. 150%
B. 15%
C. 1.5%
D. None of these

17. (0.7x, 0.7y)
F. 700%
G. 7%
H. 0.7%
J. None of these

​

Answer 1

The correct option in both cases is None of these

Explanation:

(1.5x , 1.5y)

means we had (x,y) before

we only had to multiply each of the two by 1.5

So the percentage enlargement will be;

(1.5x-x)/x * 100

= 0.5x/x * 100

= 0.5 * 100 = 50%

The answer is none of these

for the second one, we have

(0.7x-x)/x * 100%

= -0.3x/x * 100%

= -30%

This is a 30% reduction

The answer here too is none of these