Explanation:
To determine which table shows a constant of proportionality of 3 for the ratio of amps to guitars, we need to calculate the ratio of amps to guitars for each table. The constant of proportionality is the same as the ratio in this case.
Let's calculate the ratios:
Table A:
.For Row 1: Amps/Guitars = 3/1 = 3
.For Row 2: Amps/Guitars = 4/2 = 2
Table B:
.For Row 1: Amps/Guitars = 6/1 = 6
.For Row 2: Amps/Guitars = 12/2 = 6
Table C:
For Row 1: Amps/Guitars = 3/2 = 1.5
For Row 2: Amps/Guitars = 6/3 = 2
Table D:
For Row 1: Amps/Guitars = 6/2 = 3
For Row 2: Amps/Guitars = 9/3 = 3
The only table that shows a constant ratio of 3 for the ratio of amps to guitars is Table D.