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SashulF [63]
3 years ago
9

Help me with question 15 plz?

Mathematics
2 answers:
kirza4 [7]3 years ago
8 0

Answer:

B  y=2x+3

Step-by-step explanation:

We need to find the slope of the relationship in the table

m = (y2-y2)/(x2-x1)

  = (13-7)/(5-2)

   = 6/3

  =2

The slope is 2

We can use point slope form to make an equation

y-y1=m(x-x1)

y-7 = 2(x-2)

Distribute the 2

y-7 =2x-4

Add 7 to each side

y-7+7 =2x-4+7

y = 2x+3

yawa3891 [41]3 years ago
6 0

Answer:

B

Step-by-step explanation:

well plug in x and y

so if it says y=2x-3 put it as 7=(2x2)-3  and see if it gives u 7 and if it does di the next set of x and y numbers


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Solve the system for x and y -3x+8y=103 -5x-8y=-255
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Answer:

  (x, y) = (19, 20)

Step-by-step explanation:

The coefficients of y are opposites, so we can add the two equations to eliminate y.

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Substituting into the first equation, we have ...

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The solution is (x, y) = (19, 20).

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