Question

Solve each system of equations by graphing.
y = 2x
y = x + 1

Answer 1

Explanation:

The system of linear equations are , (i) y = 2x and (ii) y = x + 1 . We will find some coordinates and then we will plot its graph. The point where both Graphs will meet will be the solution of the graph .

• Finding coordinates of Equⁿ (i) :-

Step 1 : Put x = 0 :-

`\tt y = 2x = 2(0) = \red{0}`

Step 2: Put x = 1 :-

`\tt y = 2x = 2(1) = \red{2}`

`\boxed{\begin{array}c \bf x & \tt 0 &\tt 1 \\ \bf y &\tt 0 & \tt 2 \end{array}}`

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• Finding coordinates of equⁿ (ii) :-

Step 1 : Put x = 0 :-

`\tt y = x + 1 = 1 + 0 = \red{1}`

Step 2: Put x = 1 :-

`\tt y = x + 1 = 1 + 1 = \red{2}`

`\boxed{\begin{array}c \bf x & \tt 0 &\tt 1 \\ \bf y &\tt 1 & \tt 2\end{array}}`

Now plot these points on the graph Taking appropriate scale . Refer to the attachment in graph . From graph the Solution is (1,2) .