Please work out question number 12 with working and answer. I'm stuck help please.
1 answer:
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Answer:
Option C is the 3rd picture
see the attached figure
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
Let
x ----> the number of quarters
y ----> the number of minutes
we know that
<u><em>Verify each table</em></u>
<em>First table</em>
For x=1, y=5 ---->
For x=3, y=7 ---->
For x=5, y=10 ---->
The values of k are different
therefore
This table not shows a proportional relationship between the number of quarters and the number of minutes
<em>Second table</em>
For x=2, y=5 ---->
For x=3, y=8 ---->
For x=4, y=16 ---->
The values of k are different
therefore
This table not shows a proportional relationship between the number of quarters and the number of minutes
<em>Third table</em>
For x=2, y=10 ---->
For x=5, y=25 ---->
For x=7, y=35 ---->
The value of k=5
therefore
This table shows a proportional relationship between the number of quarters and the number of minutes
<em>Fourth table</em>
For x=4, y=8 ---->
For x=8, y=18 ---->
For x=12, y=28 ---->
The values of k are different
therefore
This table not shows a proportional relationship between the number of quarters and the number of minutes
