Question

Determine which of the lines, if any, are parallel or perpendicular.
Line a passes through (-2,1) and (0,3)
Line b passes through (4,1) and (6,4)
Line c passes through (1,3) and (4,1)

Answer 1

i think a and c are parallel

Answer 2

you know the slope formula, right?\[\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]
find the slope for each line first

Answer 3

can you tell me what you get?

Answer 4

If I get the answer

Answer 5

well i'm not gonna give you the answer if that's what you're asking? find the slope for each line and you can see which lines are parallel or perpendicular

Answer 6

oh no, I know. I'm not asking for the answer im just saying that if i figure out the answer then ill tell you

Answer 7

oh ok, sorry i misunderstood :)
parallel lines have the same slope and perpendicular lines have slopes that are negative reciprocals

Answer 8

so, for example, perpendicular lines would have slopes like 4 and -1/4

Answer 9

oh ok

Answer 10

so have you found out the slopes for each line?

Answer 11

or still workin on it?

Answer 12

I'm still confused on what im supposed to do it. Im VERY

Answer 13

bad at math.

Answer 14

ok this is the slope formula: \[\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]
it's the difference of the y's divided by the difference of the x's

Answer 15

i'll do line a for you

Answer 16

line a has points (-2,1) and (0,3). so i'm going to plug that into the formula\[\frac{ 1-3 }{ -2-0 }=\frac{ -2 }{ -2 }=1\]
so line a has a slope of 1

Answer 17

can you do line b?

Answer 18

ok