# Question #8469f

Oct 23, 2016

They intersect at $\left(2 , 9\right)$ and they are NOT perpendicular.

#### Explanation:

Subtract the first from the second to obtain the x coordinate of intersection:

$y - y = 3 x + 3 x - 15 + 3$

$0 = 6 x - 12$

$x = 2$

The them to obtain the y coordinate of intersection:

$y + y = 3 x - 3 x + 15 + 3$

$2 y = 18$

$y = 9$

They are not perpendicular, because the slopes are not the negative reciprocal of each other.