If Y = -7 X, then S.D(Y) = …..:

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2 + 0 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

If Y = -7 X, then S.D(Y) = …..:

-7 S.D(X)

-7 X

7 S.D(X)

Zero