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forsale [732]
3 years ago
12

PLS HELP ME! Write a rule (function) for the data in this table.

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
5 0

Answer:

y = x - 3

<h3>How I know I'm correct:</h3>

if you plug in the numbers from the table, it checks out.

y = x - 3

0 = 3 - 3

0 = 0

y = x - 3

1 = 4 - 3

1 = 1

y = x - 3

2 = 5 - 3

2 = 2

and so on

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Answer:

x = 9

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Step-by-step explanation:

Let's set up equations:

x + y = 15

x - y = 3

Let's rearrange one of these equations to use the substitution method:

x - y = 3

Add y to each side:

x = y + 3

Substitute in for x:

x + y = 15

y + 3 + y = 15

Combine like terms:

( y + y ) + 3 = 15

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Subtract 3 from each side:

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Divide each side by 2:

y = 6

Substitute this in to find the other variable:

x + y = 15

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Subtract 6 from each side:

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