Determine if the set of ordered pairs is a relation or a function.

1 answer:

3 0

to be a function, each input can have only one output. For these points, each x has only one y, so it it a function. A relation, just describes x to y, so it is both

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Is (3,4) a solution to the system of equations. X + y = 7 x - 2y = - 5

Anuta_ua [19.1K]

Answer: Yes, the point (3,4) is a solution to the system.

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Proof of this:

Replace x with 3 and y with 4 in the first equation

x+y = 7

3+4 = 7

7 = 7

This confirms the first equation. Repeat for the second equation

x-2y = -5

3-2(4) = -5

3 - 8 = -5

-5 = -5

We get true equations for both when we plug in (x,y) = (3,4). This confirms it is a valid solution to the system of equations. It turns out it's the only solution to this system of equations. Visually, the two lines cross at the single location (3,4).

8 0

3 years ago

Order the rational numbers below from greatest to least. -3/4 , .8, 1, -5.3 , 9. I'm not that smart so imma try to get this answ

Kitty [74]

It’s -5.3 then -3/4 then 1 then .8 and finally 9

6 0

3 years ago

Read 2 more answers

I need help on my homework

soldi70 [24.7K]

Answer:

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