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masya89 [10]
3 years ago
13

Y=2x+8 and y= -2/3x. Identify the value of x that simultaneously satisfies both equations.

Mathematics
1 answer:
son4ous [18]3 years ago
5 0
Let's solve this by subst. (-2/3)x for y in y=2x+8.

Then 2x+8 = (-2/3)x.  (For clarity you must use those parentheses.)

The LCD is 3.  Mult. both sides by 3, obtaining

6x+24 = -2x.  Then 8x = -24, and x = -3.  Now that you have a value for x, subst. this value (-3) into either of the given equations to determine y.

Then write your solution in the form (-3,  ??  ).
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BigorU [14]

Step-by-step explanation:

We can make 2 equations as follows:

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x + 2y = 18 is the same as x = 18 - 2y. Hence, 2(18 - 2y) = 2x = y + 16.

2(18 - 2y) = y + 16

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y = 4.

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sweet-ann [11.9K]
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4 years ago
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Arte-miy333 [17]

Answer:

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Step-by-step explanation:

How that this helps! :)

Have a great rest of your day/night!

4 0
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