The equation of a line with slope m and y-intercept c is given by:

1. x = my + c

2. cy = mx

3. y = mx + c

4. none of these

The slope m of a line whose inclination is α, is given by :

1. sin α

2. cos α

3. tan α

4. cot α

The equation of a line passing through two points A(x₁, y₁) and B(x₂, y₂) is given by:

1. (x – x₁) = $\dfrac{y$2 - y1}{x2 - x1} (y – y₁)

2. (y – y₁) = $\dfrac{x$2 - x1}{y2 - y1} (x – x₁)

3. (y – y₁) = $\dfrac{y$2 - y1}{x2 - x1} (x – x₁)

4. (y – y₁) = $\dfrac{y$1 - y2}{x2 - x1} (x – x₁)

The equation of a line with slope m and passing through (0, 0) is :

1. x = my

2. y = mx

3. m = y – x

4. m = y + x