Answer:
1. 5
2. 2.25
3. 0.5
4. 6
5. 5, 30, 7
6. 2, 25, 20
7. 7, 3 (Read below what I said about this problem)
8. (Read below what I said about this problem)
Explanation:
We have to find the ratio for all of these tables so divide the y-value by the x-value for ANY one coordinate to get the ratio-- and if the x-value isn't 1, multiply the ratio by that x-value. And, if the x-value is missing, divide the y-value by the slope.
1. Let's pick 60/12,
60/12 = 5
The ratio is 5, so the missing number is 5 if x is 1.
2. Let's pick 18/8,
18/8 = 2.25
The ratio is 2.25, so the missing number is 2.25 if x is 1.
3. Let's pick 1/2,
1/2 = 0.5
The ratio is 0.5, so the missing number is 0.5 if x is 1.
4. Let's pick 1.5/0.25,
1.5/0.25 = 6
The ratio is 6, so the missing number is 6 if x is 1.
5.
Let's pick 10/1,
10/1 = 10
The ratio is 10, so if 50 is the y-value, the x-value would have to be 10 times less than 50:
50/10 = 5
The missing number is 5 if the y-value is 50.
Now, if the x-value is 3, the y-value would have to be 10 times more than 3:
3 · 10 = 30
The missing number is 30 if the x-value is 3.
Now, if the y-value is 70, the x-value would have to be 10 times less than 70:
70/10 = 7
The missing number is 7 if the y-value is 70.
6. Let's pick 2.5/1,
2.5/1 = 2.5
The ratio is 2.5, so if the y-value is 5, the x-value would have to be 2.5 times less than 5:
5/2.5 = 2
The missing number is 2 if the y-value is 5.
Now, if the x-value is 10, the y-value would have to be 2.5 times more than 10:
10 · 2.5 = 25
The missing number is 25 if the x-value is 10.
Now, if the y-value is 50, the x-value would have to be 2.5 times less than 50:
50/2.5 = 20
The missing number is 20 if the y-value is 50.
7.
Let's pick 15/5,
15/5 = 3
The ratio is 3, so if the y-value is 21, the x-value would have to be 3 times less than 21:
21/3 = 7
The missing number is 7 if the y-value is 21.
Now, if the x-value is 1, the y-value would have to be 3 times more than 1:
1 · 3 = 3
The missing number is 3 if the x-value is 1.
Now, if the y-value is 6, the x-value would have to be 3 times less than 6:
6/3 = 2
The missing number is 2 if the x-value is 6.
8. (This image is cut off and I can't see two definite points(a complete coordinate) so I can't help you with this table-- instead, just apply what I've said to this problem when you see a complete coordinate)