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lapo4ka [179]
2 years ago
10

Isolate x in the first equation:

Mathematics
1 answer:
denis-greek [22]2 years ago
4 0

If y is substitute into either of the original equation. The  solution as an ordered pair are: x=-2; y=3.

<h3>The solution as an ordered pair</h3>

x + 3y= 7 equation 1

x+2y=4 equation 2

Solving for y

x+3y-(x+2y)=7-4

x+3y-z-2y=7-4

3y-2y=7-4

y=7-4

y=3

Substitute y=3 into equation 2

x+2y=4

x+2×3=4

x+6=4

Collect like terms

x=4-6

x=-2

Therefore the  solution as an ordered pair are: x=-2; y=3.

Learn more about solution as an ordered pair here:brainly.com/question/1515438

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<h3>How to find a trend line for the data?</h3>

In order to determine a linear equation of the trend line (line of best fit) that models the data points contained in the table, we would have to use a scatter plot.

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On the Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display an equation for the trend line (line of best fit) on the scatter plot.

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7 0
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