The quadratic equation could be: 
Draw an area model to show how the distributive property of multiplication can be used to solve 7×9.
1 answer:
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<u>Answer-</u>
<em>The value of y is when x=7 and z=4.</em>
<u>Solution-</u>
As given in the question, y is directly proportional to x, so
-----------------1
And also y is directly proportional to z, so
-----------------2
Combining equation 1 and 2,
Where,
k = proportionality constant
When x=6 and z=1, y=4. Putting theses values,
Now, we have to find the value of y, when x=7 and z=4
Therefore, the value of y is when x=7 and z=4.