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Solve the following pair of simultaneous equation graphically
X+2y=3,2x-y=7

User Jahkayia
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1 Answer

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Answer:

(x, y) = (3.4, -0.2)

Explanation:

You want a graphical solution for the system of equations ...

  • x +2y = 3
  • 2x -y = 7

Graph

The graph and solution are shown in the attachment. A graphing calculator is a nice bit of useful technology for this. The solution is ...

(x, y) = (3.4, -0.2)

The first line has x-intercept 3 and y-intercept 1.5.

The second line has y-intercept -7 and slope 2. It crosses the x-axis at x=3.5, so will cross the first line in the 4th quadrant.

Solve the following pair of simultaneous equation graphically X+2y=3,2x-y=7-example-1
User Martin Berger
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7.3k points