10. What is the system of equations that describes the following graph?

Mathematics

1 answer:

klemol [59]3 years ago

8 0

Answer:

y = 2x - 2

y = -x + 5

Step-by-step explanation:

First, look at the y-intercept of each line. On one line it is -2 and on the other it is 5. Then look at the amount the line goes up or down per x-notch. On one line it is 2 and on the other it is -1. Then sub in these values into the template y=mx+b and you will have your equations.

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Please help me thnk you

kramer

For this question, we use the Pythagorean theorem.

$a^2+b^2=c^2$

We know the lengths of the legs, a and b.
$a=3$
$b=4$

Now, let's solve for the hypotenuse, c.

$3^2+4^2=c^2$
$25=c^2$

Take the positive square root.

$\boxed{c=5}$

Hope this helps! :)

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4 years ago

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Which expression is a difference of a number and a product?

zaharov [31]

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If 2x+z=2y and 2x+2y+z=20 what is the value of y?

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$2x+z=2y\to2x=2y-z\\\\substitute\ to\ 2x+2y+z=20:\\\\(2y-z)+2y+z=20\\2y-z+2y+z=20\\4y=20\ \ \ \ /:4\\y=5\to answer$