Question #8469f

1 Answer
Douglas K.
Oct 23, 2016

They intersect at #(2, 9)# and they are NOT perpendicular.

Explanation:

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

#y - y = 3x + 3x - 15 + 3#

#0 = 6x - 12#

#x = 2#

The them to obtain the y coordinate of intersection:

#y + y = 3x - 3x + 15 + 3#

#2y = 18#

#y = 9#

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

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