Question

Solve the system of linear equation graphically x + y = 10 and x – y = - 4​

Answer 1

Answer:

x + y = 10 and x - y = 4. Now we plot the points A (10, 0), B(0, 10) and P(4, 0), Q(0, 4) on the graph paper. We observe that the two lines representing the two equations are intersecting at the point (7, 3). Hence, x=7y=3} is a solution of given equations

Answer 2

Answer:

$x + y = 10 \\ x = y - 4 \\ y - 4 + y = 10 \\ 2y = 14 \\ y = 7 \\ x = 3$

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