Question

solve graphically x+y=7&3x-y=1

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Answer 1

Answer:

• X=2 Y=5
• X+y=7-(1)

3x-y=+1-(2)

4x=8

X=8/4=2

• put the value of x is
• 2+y=7

y=7-2

y=5

• so the answer is X=2, y=5

Answer 2

Answer:

For x+y=3:

x 0 3 2

y 3 0 1

For −3x+2y=1:

x -1 1 -3

y -1 2 -4

As the graph shows, both lines meets at (1,2).

solution