Question

What are the missing numbers for this ratio table

Answer 1

• y = 8
• x = 9

Explanation:

The ratios of the numbers shown in the table are all ...

y/x = 16/4 = 20/5 = 4

Then the missing y-value is ...

y = 4x

y = 4(2) = 8

__

And the missing x-value is ...

36 = 4x

36/4 = x = 9

_____

Additional comment

The x- and y-values in a "ratio table" are proportional to each other. That means the y corresponding to half an x-value will be half the y-value. In other words, the y for x=2 will be half the y for x=4, or 16/2 = 8.

Also, the values add. We notice that y=36 is the sum of y=16 and y=20. This means the corresponding x-value for y=36 will be the sum of x=4 and x=5, or x = 4+5 = 9.