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Tcecarenko [31]
3 years ago
5

Can someone help me please

Mathematics
1 answer:
gregori [183]3 years ago
6 0

Answer:

y = -16

x = 2

Step-by-step explanation:

-×2/ -x - 5y = 78 ➡ 2x + 10y = -156 (whole equation multiplied with -2)

then add up two equations

2x + 10y = -156

-2x + 2y = -38 (2x will be eliminated)

12y = -192

y = -16

now you can find x using the value of y

if

2x + 10y = -156 ➡ 2x -160 = -156 ➡ 2x = -156 + 160 ➡ 2x = 4

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Answer:

D) 5

Step-by-step explanation:

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other. Divide 2 from all terms within the equation:

(2y)/2 = (10x - 8)/2

y = (10x)/2 - (8)/2

y = 5x - 4

Note the slope-intercept form:

y = mx + b

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m = slope

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In this case, 5 is in place of m, or your slope.

D) 5 is your answer.

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3 years ago
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prisoha [69]

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Step-by-step explanation:

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asambeis [7]

Answer:

4

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y\propto x

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