Math

QuestionEvaluate 2x31y5\frac{2 x-31}{y-5} for x=7x=-7 and y=4y=-4. Is it a number or undefined?

Studdy Solution

STEP 1

Assumptions1. The value of xx is 7-7 . The value of yy is 4-4

STEP 2

We need to substitute the given values of xx and yy into the expression.2x31y5\frac{2 x-31}{y-5}

STEP 3

Substitute x=7x = -7 and y=y = - into the expression.
2(7)315\frac{2(-7)-31}{--5}

STEP 4

implify the numerator and denominator separately.
14314\frac{-14-31}{-4-}

STEP 5

Calculate the numerator and denominator.
459\frac{-45}{-9}

STEP 6

Finally, divide the numerator by the denominator.
459=5\frac{-45}{-9} =5So, the correct choice is A. 2x31y5=5\frac{2 x-31}{y-5}=5

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