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2 years ago

Which ordered pair is a solution of this

2 answers:

8 0

The answer is (-1,-2)

First, we put the equation in standard form
Add the 2x to the other side leaving us with -y = 2x +4. They y must be positive so we multiply the whole equation by -1. This gives us y = -2x - 4. We then plug the coordinates in to find out which one comes out to be true.

The only one that comes out true is (-1,-2)
-2 = -2(-1) - 4 which comes out to -2 = -2 True.

Natalija [7]2 years ago

3 0

Answer:

(-1, -2)

Step-by-step explanation:

when x = -1 and y = -2,

(-2 · -1) - (-2) = 2 + 2 = 4

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3 years ago

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3 years ago

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umka21 [38]

Answer:

Step-by-step explanation:

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of Shares Share (At 6% of total)

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3 years ago

An elephant can run 1/4 of a mile in 36 seconds. At this rate, which expression can be used to determine how fast an elephant ru

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2 years ago

Read 2 more answers

. A baker purchased 12 lb of wheat flour and 15 lb of rye flour for a total cost of $18.30. A second purchase at the same prices

mash [69]

<span>w - amount of wheat purchased
r - amount of rye purchased

12w+15r=18.30 /*2
15w+10r=16.75 /*3

24w+30r=36.60, subtract this equation from the other one
45w+30r=50.25

21w=13.65
w=13.65/21
w=0.65 is a cost per pound for wheat flour

From the first equation we have
r=(18.30-12w)/15
r=(18.30-12*0.65)/15
r=0.70 is a cost per pound for rye flour</span>

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3 years ago

Read 2 more answers