Question

A line contains the points (3, -1) and (-1, 2). Another line graphed in the same coordinate plane contains the points (2,0) and (-2,3).
Based on the slope of these lines, are they parallel, perpendicular or neither?

Answer 1

what are their slopes?

Answer 2

the question asks "based on their slopes" which implies that the slopes are already found. So what have you found their slopes to be?

Answer 3

3/4 and 3/-4

Answer 4

good, now ill dbl chk that to be sure :)

(3, -1)
-(-1, 2)
--------
4,-3 ; -3/4

(2,0)
-(-2,3)
-------
4,-3 ; -3/4

Answer 5

they have the exact same slope; when 2 lines have the same slope, that defines parallel lines.

Answer 6

how did you find the slope? just so i can see what went awry for you

Answer 7

i used the slope formula and i subtract 2-(-1) and i subt 3-(-1) and i found the answer for 3/4

Answer 8

the formula is good, but it tends to get confusing trying to make sure that the parts are in the right spots.

in essense; you subtract one point from another:

(3, -1)
-(-1, 2)


(3, -1)
1, -2
--------
4, -3 ; and stack y/x. slope = -3/4

and again for the other one:

(2,0)
-(-2,3)

(2,0)
2,-3
-------
4,-3; slope = y/x, -3/4

Answer 9

i just find that "method" easier to follow

Answer 10

it look easier thank you

Answer 11

youre welcome, and good luck :)

Answer 12

thnkz