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anonymous
 one year ago
Identifying parallel and perpendicular lines from coordinates...Help!
anonymous
 one year ago
Identifying parallel and perpendicular lines from coordinates...Help!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know how to use this equation to find the slope of a line?\[m=\frac{ y_2y_1 }{ x_2x_1 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0great. you want to start by using that equation to get the slopes of the three lines

anonymous
 one year ago
Best ResponseYou've already chosen the best response.00/3 for the first one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got m = (8  2) /(3  0) = 6/(3) = 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have to enter the points into the equationdw:1444407766451:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oooohh i was doing something else but I understand now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then that reduces to \[m=\frac{ 6 }{ 3 }\] \[m=2\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah so the first one is 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep. try the 2nd one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes and what does that reduce to?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep. ok so the three slopes are line 1 = 2 line 2 = 2 line 3 = 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for part b. parallel lines have the same slope, so lines 1 and 2 are parallel perpendicular lines have opposite reciprocal slopes. (like if one line has slope of 2, then the other must have slope of ½.) None of them are like that, so none of the lines are perpendicular

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@peachpi what about 6/9 , 2/3 , 3/2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0where did those numbers come from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok. reduce the first one to 2/3. for the 2nd one, once you're done with the math move the negative sign out front, so it's 2/3. None of them are the same, so none are parallel. 2/3 and 3/2 have different signs, and are reciprocals (aka flipped over). so the lines with those two slope are perpendicular

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oops. the 3/2 is positive, so it's perpendicular to the line with slope of 2/3. That looks like lines 2 and 3 are perpendicular
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