A linear equation in 2 variables is like
3x + 4y = 10
It has
- An equal sign =
- Highest power is 1
- Two variables - x & y
Is 3y + 4z = 80 a linear equation in two variable?
Yes,
It has
- An equal sign =
- Highest power is 1
- Two variable - x & y
Is 3x + 4y + 5z = 50 a linear equation in two variable?
No
It has 3 variables - x, y, z.
But in linear equation in two variables, we have 2 variables.
Is 2x + 5 = 0 a linear equation in two variable?
No
It has 1 variable - x
But in linear equation in two variables, we have 2 variables.