Find the equation of a line that is parallel to the line x equals negative 1x=−1 and contains the point left parenthesis negative 2 comma 1 right parenthesis .

The equation of the line is given as 

A straight line equation is given in the form  where  is the gradient and  is the y-interest.

We need to rearrange  to make  the subject. 
 ⇒ from here we can read the gradient and the y-intercept. The gradient,  and .

A line that is parallel to  will have the same gradient,  but different y-intercept. One example of equation of a line that is parallel to  is 

Heya dear

df =

both have same length