Question

Find the equation of the straight lines Parallel to the line y + 8 = 0 and passes through (2; 1).​

Answer 1

`y = 1`

Explanation:

Rearranging the equation:

`y = -8`

Three points to be considered:

1. Above is a horizontal line cutting through the y-axis at y value of
`-8`.
2. A horizontal line has a slope (or gradient) of 0.
3. Parallel lines have the same slope (or gradient)

∴The straight line passing through (2, 1) will also have a zero slope. In addition, this is a horizontal line, which cuts the y-axis at y value of 1.
The equation of straight line:

y = 1