Concept explainers
Find the value of y when y varies jointly as x and z.
Answer to Problem 84SR
Explanation of Solution
Given:
Find y when x = 9 and z = − 5, when y = − 90, z = − 15 and x = − 6.
Concept Used:
Y varies jointly as x and z. The direct variation formula:
Calculation:
Therefore, the direct variation equation is
Find the value of y when
Thus, therefore,
Chapter 10 Solutions
Glencoe Algebra 2 Student Edition C2014
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