What We Have Discussed

1. If a linear equation has variables, then it is called a linear equation in two variables.

2. Any pair of values of and which satisfy the linear equation in two variables is called its solution.

3. A linear equation in variables has many solutions.

4. The graph of every linear equation in variables is a straight line.

5. An equation of the form y = mx represents a line that passes through the .

6. The graph of x = k is a line parallel to the Y-axis at a distance of units and passes through the point (k, 0).

7. The graph of y = k is a line parallel to the X-axis at a distance of units and passes through the point (0, k).

8. The equation of the -axis is y = 0.

9. The equation of the -axis is x = 0.