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xenn [34]
3 years ago
14

Can someone explain this and help me?

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
6 0

Answer:  (2,<u>-5</u>)

Step-by-step explanation:

The slope of the line formed by this set of number is 2 (y increases by 2 for every 1 increase in x).  The line has the form y = 2x + b.  Enter one of the data points to find b.

y = 2x + b  for (2,3)

3 = 2*2 + b

b = -1

The equation is y = 2x - 1

The missing value:  y =2*(-2) - 1

                                 y = -5

(2,-5)

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3 years ago
Please anybody help please
wel

Answer:

x= -3 and y = 6

Step-by-step explanation:

so basically what you are trying to do is reduce into finding x and y

what you do is you want to find a number to multiply one of the equations in order to get the same x or y value does not matter which

so,...

we can do

either 20x or 15y

we will go with the smallest 15y

so for both equations multiply the whole thing by 5 for the first equation and by 3 for the second

5 x 5x+3y=3 --> 1

3 x 4x+5y=18 --> 2

we then get

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then now that you have the same Y values you can subtract ! which cancels out both the 15y

25x+15y = 15 -->1

- 12x + 15y = 54 -->2

13x =-39

so now x=-3 and all you have to do with x = -3 is sub this into either one of the equations that you started with  !

x = -3

5(-3) +3y =3

-15 + 3y = 3

3y = 3+15

3y=18

y = 6!

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