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Archy [21]
3 years ago
14

PLEASEEEEEEE HELP SOMEONE WHO DOESNT NO MATH

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
5 0
No this is not a function because 4 is used twice on the y side
ale4655 [162]3 years ago
4 0

Answer:

yes, this is a function because each x value is paired with with exactly one y value (the first one in the multiple choice)

Step-by-step explanation:

For something to be a function an input can have only one output. Multiple different inputs can have the same output, but not the other way around.

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Katyanochek1 [597]
I am going to explain this using the substitution method, considering it appears to be the best in this situation.

We know (from the bottom equation) that y can equal 3x+20. Using this knowledge, we substitute the y in the top equation for 3x+20. Now, we have an equation that looks like this:

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This doesn't simplify any further... we have a problem... no way to isolate x as far as my knowledge goes... Sorry, can't help you any further than that, but another person or your teacher might be able to. R.I.P...
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Answer:

8

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Answer:

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