Posted by **Ariel** on Wednesday, June 9, 2010 at 7:36pm.

Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i think it is.

1.) Given points A(-4, 5), B(2, 3), C(0, 4) and D(5, 0), decide if AB and CD are parallel, perpendicular or neither.

=Neither

2.)Given the equations y = 1x + 7 and y = 3x - 2, decide whether the lines are parallel, perpendicular or neither.

=neither

3.) Given the equations y = 4/3x - 3 and y = -3/4x + 2, decide whether the lines are parallel, perpendicular, or neither.

=Perpendicular

4.) Which set of points are collinear?{options being A(-1,5); B(2,6); C(4,7), A(0,0); B(1/2,3); C(1,5), A(-4,-2); B(0,-4); C(2,-5)

= A(-4,-2); B(0,-4); C(2,-5)

5.) Choose whether the lines given below are parallel, perpendicular or neither.4x - 6y = 9; 3y - 2x = 7j

= neither

6.) Choose whether the lines given below are parallel, perpendicular or neither.

4x - 6y = 9; 4y + 6x = 12

=perpendicular

7.) Choose whether the lines given below are parallel, perpendicular or neither.4x - 6y = 9; 3x - 2y = 11

=neither

8.) Triangle Î”ABC has vertices A(2,5), B(8,1) and C(-2,-1) and is a right triangle. If the slope of AB is -2/3 and the slope of AC is 3/2, are the lines parallel, perpendicular or neither?

=perpendicular

- Plz Check My Geometry -
**Reiny**, Wednesday, June 9, 2010 at 7:45pm
I caught #5

first equation : 4x - 6y = 9

multiply 2nd by -2 ---> 4x - 6y = 14j

what do you think now?

- Plz Check My Geometry -
**Ariel**, Wednesday, June 9, 2010 at 8:03pm
perpendicular

- Plz Check My Geometry -
**Reiny**, Wednesday, June 9, 2010 at 8:12pm
no, aren't their slopes equal ??

4x - 6y = ?????

the slope is 2/3, the constant on the right side does not matter.

- Plz Check My Geometry -
**Ariel**, Wednesday, June 9, 2010 at 10:31pm
oh ok

- Plz Check My Geometry -
**shaq**, Sunday, September 4, 2011 at 5:39pm
lol

- Plz Check My Geometry -
**Bienka liberal**, Thursday, July 12, 2012 at 10:39am
Choose whether the lines given below are parallel, perpendicular or neither.

- Plz Check My Geometry -
**Tiara**, Thursday, May 8, 2014 at 4:46pm
Determine whether the lines are perpendicular, parallel or neither.

-x+2y= -2

2x-4y= 3

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