# Which equation represents the line that passes through the points (1, 1) and (-2, 7)?

##### 1 Answer

Nov 27, 2016

general equation:

final equation:

#### Explanation:

Now you need to find the directional vector:

With this vector you are able to create the parametric equation, but I gues you want the general equation, so you will need the normal vector.

You create the normal vector form directional by replacing x and y and changing one of signs. There are two solutions:

1.

2.

It does not matter which one of them you will choose.

General equation:

for A (

Final equation: