Parallel,Perpendicular,Or Neither
Writing equations of parallel lines
Writing equations of perpendicular lines
Identifying the center and radius of a circle
Completing the square to find the center and radius of a circle
100

y=1/4x+2  and  y=-1/4x+7 

neither

100

y=x+5  (1,2)

y=x+1

100

y=2x+1  (2,4)

y=-1/2x+3 

100

(x+3)² +(y-4)² =64

Center- (-3,4)   Radius-8

100

x²+4x+y²-7=0

Center- (-2,0)  Radius-√11

200

y=3/4x+12   and   y=-4/3x+2

perpendicular

200

y=4x+2  (5,3)

y=4x-17

200

y=3x+2  (3,1)

y=-1/3x+2

200

(x-9)² +(y-7)² =36

Center-(9,7)  Radius-6
200

x²+y²+16x+14y-2=0

Center- (-8,-7)  Radius-√115

300

Determine if the lines are perpendicular

y=2/3x+3   and  2x+3y=4

not perpendicular

300

y=2x+7  (-4,-5)

y=2x+3

300

y=4x+6   (4,-3)

y=-1/4x-2

300

(x+6)² +y² =81

Center- (-6,0)   Radius-9

300

x²+8x+y²-4y-3=0

Center- (-4,2)   Radius- √23

400

Determine if the lines are parallel 

2x+6y=1  and  4x+12y=3

Parallel

400

y=-5x-10  (8,-7)

y=-5x+47

400

y=-8+4   (-16,7)

y=1/8x+9

400

x² +4x+y² +2y=6

Center- (-2,-1)   Radius- √11

400

x²+y²+2x+4y-1=0

Center- (-1,-2)  Radius-√6

500

6x-4y=5  and  3x-2y=-9

Parallel

500

y=10x-8  (-5,-6)

y=10x+44

500

y=-12x-8  (-24,-15)

y=-1/12x+17

500

x²+y²+6x+2y-3=0

Center- (-3,-1)  Radius-√13

500

x²+y²-6x+14y-6=0

Center-(3,-7)  Radius-8

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