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kow [346]
2 years ago
15

What is the solution to the system of equations below. y = x - 8 y = -2x + 1

Mathematics
1 answer:
klasskru [66]2 years ago
3 0

Answer: x=3 y=-5

Step-by-step explanation:

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Please help my brain is mush i dont understand how this works nd i still have 11 assignments after this-
Mars2501 [29]

Answer:

See step by step

Step-by-step explanation:

1. First question, do they represent functions? The one o. the left is a function because if you do the vertical line test. It only passes through a point once so it is a function. while on the right if you do the vertical line test, it passes through a point twice so it not a function. For 2.. n other words, since the domain of this equation is all real numbers or negative infinity to positives infinity

let say x=1 and x=-1 and we use the equation

y =  {x}^{2}

when we plug both those in we get

y = 1

this means that we can have two different x-values to equal out to the same y value. This is the definition of a function. So the one on the right is a function.

However the one on the left is a relation. TO Prove it, the domain of that function is all real numbers equal to or greater than zero, so let use 4.

{y}^{2}  = 4

{y} = 2 \: or \:  - 2

Since there are 2 possible answer choices as the y value, this isn't a function. It a relation. It maps a group of ordered sets to one x value. Which is the opposite of the function. So the one of the left is a relation

3 0
2 years ago
What is the system solution to 8x + 7y = 39
ludmilkaskok [199]

Answer:

-8/7

Step-by-step explanation:

I thinks this is the answer

8 0
1 year ago
Muriel says she has written a system of two linear equations that has an infinite number of solutions. One of the equations of t
Vanyuwa [196]
An infinite number of solutions means a coincident line...it is the same line
3y = 2x - 9...divide by 3
y = 2/3x - 3...hmm...same line as answer choice b....they are coincident lines and have infinite solutions
3 0
3 years ago
Read 2 more answers
Need help Last weekend, Raul's basketball team played in a
Darina [25.2K]

Answer:

40%

Step-by-step explanation:

First off, 1/5 is equal to 20%. If you're diving something into 5ths, you can do 100 / 5, which is 20. So you know that Raul scored at least 20% of the points. His friend Jake ALSO scores 20% of the teams points, making 20 + 20 = 40%. Therefore, 40% of the teams points were scored by Raul and Jake.

6 0
3 years ago
Rewrite in simplest terms: 4 x − 5 ( x + 3 )
rusak2 [61]

Answer:

Step-by-step explanation:

4x - 5(x + 3)         Remove the brackets. Watch the - sign and -5*3

4x - 5x - 15          Combine the xs

-x - 15

4 0
2 years ago
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