Linear Equations in Two Variables

**Linear equation in two variables:**

An equation of the form, *ax + by + c *= 0, where *a*, *b *and *c* are constants, such that *a* and *b* are both not zero and *x *and *y* are variables is called a linear equation in two variables.

For example, 2*x* + 3*y* + 10 = 0, 3*x* + 7*y* = 0

- Real life situations can be expressed mathematically as linear equations in two variables. …

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