Question

-8x-8y=-8
-9x-9y=9
is the answer no solution, (4,-1), (7,-1), or (4,1)?

Answer 1

Simplify the equation for line 1 to get it into our y = mx + b format:
--8x - 8y = -8
-8y = -8x - 8

Divide each side of the equation by -8 to isolate y:
-8y
-8
=

-8x - 8
-8

Simplifying and evaluating, we have:
y = -1x + 1
Therefore, the slope of line equation 1 = -1

Simplify the equation for line 2 to get it into our y = mx + b format:
--9x - 9y = 9
-9y = -9x + 9

Divide each side of the equation by -9 to isolate y:
-9y
-9
=

-9x + 9
-9

Simplifying and evaluating, we have:
y = -1x - 1
Therefore, the slope of line equation 2 = -1

Since the slope of both lines = -1, the lines are parallel and never cross

The 2 lines are parallel.

NO SOLUTION