Utilizing the number line, we ordered the sets as follows:
Set 12: -3/2, -1.25, 1.25, 1 1/2
Set 13: -0.75, -0.5, 3/4, 1/2
Set 14: -1.5, -1, 0.75, 2
To order the given sets of numbers from least to greatest, we can use the number line to visually represent their positions.
Set 12:
1.25, -3/2, -1.25, 1 1/2
The number line helps in arranging these values. Starting from the left, we have -3/2, then -1.25, followed by 1.25, and finally, 1 1/2. So, the order from least to greatest is -3/2, -1.25, 1.25, 1 1/2.
Set 13:
-0.5, 1/2, -0.75, 3/4
On the number line, we can place these values in the order -0.75, -0.5, 3/4, 1/2. Therefore, the order from least to greatest is -0.75, -0.5, 3/4, 1/2.
Set 14:
-1.5, 0.75, -1, 2
When arranged on the number line, the order becomes -1.5, -1, 0.75, 2. Hence, the correct order from least to greatest is -1.5, -1, 0.75, 2.