# The equation of line m is 8x-7y+10=0. a. For what value of k is the graph kx-7y+10=0 parallel to line m? b. What is k if the graphs of m and kx-7y+10=0 are perpendicular?

##### 1 Answer

Sep 11, 2015

Refer to explanation

#### Explanation:

We write line m as follows

and

So to be parallel k must be

in order to be perpendicular we have that