3 years ago

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Mathematics

2 answers:

Sonbull [250]3 years ago

8 0

There is a repeating value there for it is not a function.

REY [17]3 years ago

4 0

Answer:

The mapping diagram above is not a function since -4 in Set A where there is duplication.

Step-by-step explanation:

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Use elimination to solve this system of equations x-y=11 2x+y=19

user100 [1]

Answer:

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Step-by-step explanation:

The coefficients of y are opposites, so the y-variable can be eliminated by adding the two equations.

... (x -y) +(2x +y) = (11) +(19)

... 3x = 30 . . . . . simplify

... x = 10 . . . . . . .divide by the coefficient of x

Use either equation to find y. We can use the first one, for example:

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The solution is (x, y) = (10, -1).

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