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burhan101
Group Title
Are these planes parallel and distinct or parallel and coincident ?
3x+9y6z24=0
4x+6y14z8=0
 one year ago
 one year ago
burhan101 Group Title
Are these planes parallel and distinct or parallel and coincident ? 3x+9y6z24=0 4x+6y14z8=0
 one year ago
 one year ago

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tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Divide the first by 3 and the second by 2, for starters.
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
@tkhunny and then ??
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
What do you get?
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
?? What is that? I was hoping you would get: x+3y2z8=0 2x+3y7z4=0
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
Yes i did
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
Then i did elimination to get rid of y
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Why? Are they parallel?
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
We have to figure of if theyre parallel and distinct or coincidentt
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
They are? What makes you think so? When you eliminated y, didn't that give you a line in the xz plane?
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
its given in the question
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Are you going to buy it, just because it says so? If they are parallel, shouldn't they have the same Normal Vector?
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
so they're not parallel, they intersect ?
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
That's what they look like to me.
 one year ago

burhan101 Group TitleBest ResponseYou've already chosen the best response.0
Answer key says parallel and coincident
 one year ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
3x+9y6z24=0 4x+6y14z8=0 Find a point on one of them. (10,0,1) Prove 3(10) + 9(0)  6(1)  24 = 30 + 0  6  24 = 24  24 = 0 Is it on the other one? 4(10) + 6(0)  14(1)  8 = 40  14  8 = 26  8 = 18 \(\ne 0\) Okay, we just proved that they are NOT coincident. Did you write the problem correctly? If you did, we're done.
 one year ago
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