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sesenic [268]
3 years ago
9

Solve the system of linear equations below by graphing. x-y=17 and 3x+y=3

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0

Answer:

x=5,y=-12

Step-by-step explanation:

You add the two equations to get: 4x=20

Then you get x=5.

You plug this in to x-y=17 to get y=-12

The answer is x=5 and y=-12

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Step-by-step explanation:

Slope, which is the same as gradient, is equal to

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<h3>slope =  \frac{change \: in \: y}{change \: in \: x}</h3>

Our coordinates are (-12,-12) and (9,-9)

In (-12,-12),let the first -12 be <em>x1</em><em> </em>and the second one be <em>y1</em>

Same goes for the (9,-9), let 9 be <em>X2</em><em> </em>and -9l be <em>y2</em>

<em>slope =  \frac{y2 - y1}{x2 - x1}</em>

<em>=  - \frac{ - 9 -  - 12}{9 - 12}</em>

<em>=  \frac{3}{21}</em>

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= 0.1429

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