Explain why each non-zero integer has two square roots but only one cube root.
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Answer : Direct Variation
Question :
Identify the variation as direct, inverse, joint or combined. A =
We know direct variation is y = kx
Where k is the constant of proportionality
When value of x increases then y also increases. when x value decreases then y value decreases.
The value of y depends on value of x It means y is directly proportional to x.
Hence A = is a direct variation.