5 quick questions? I'm in a rush. Will fan and give medal. Attached below!
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OpenStudy (nightmarenight):
1. What is the equation of the yz-trace for the plane 4x - 3y + z = 12?
x = 3
4x - 3y = 12
-4y + 12z = 12
-3y + z = 12
2. How many trace lines can be drawn for the plane 2x + 4z = 5?
0
1
2
3
3. What is the equation of the xz-trace for the plane 7x - 2y + 3z = 19?
7x + 3z = 19
7x - 3z = 19
-2y + 3z = 19
2y + 3z = 19
4. What is the equation of the xy-trace for the plane -5x - 2y - 3z = 10?
-3z = 10
-5x - 2y = 10
2y - 3z = 10
-2y - 3z = 10
5. The equation of the yz-trace is y + 2z = 4 for which plane?
3x - 3y + 6z = 12
-3x - y + 6z = 12
-6x - 3y + z = 12
3x - 3y + z = 12
OpenStudy (nightmarenight):
@misty1212
OpenStudy (bee_see):
#2 is 1.
OpenStudy (nightmarenight):
as in the answer 1 or as in the first answer
OpenStudy (bee_see):
for question 2.
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OpenStudy (nightmarenight):
ok
OpenStudy (nightmarenight):
do you know how the other ones work @Bee_see
OpenStudy (bee_see):
#1 is D
OpenStudy (bee_see):
#3 is A
OpenStudy (nightmarenight):
do you know the last 2
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OpenStudy (bee_see):
#4 B
OpenStudy (bee_see):
|dw:1425445191269:dw|
OpenStudy (bee_see):
for 5, replace x with 0 in each equation in the choices and see if you get y+2z=4
OpenStudy (bee_see):
are they only 4 choices for #5
OpenStudy (bee_see):
none fit
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OpenStudy (nightmarenight):
yes theres only 4 @Bee_see
OpenStudy (bee_see):
ok. let me redo the problem..maybe I'm missing something...
OpenStudy (bee_see):
it could be A, but that 12 would have to be negative.
OpenStudy (bee_see):
can you check #5? maybe you mean -y.
OpenStudy (bee_see):
in the original problem
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OpenStudy (bee_see):
then #5 would be A
OpenStudy (nightmarenight):
it is -y im sorry @Bee_see
OpenStudy (bee_see):
ok
OpenStudy (bee_see):
so 3x - 3y + 6z = 12 is the answer.
OpenStudy (nightmarenight):
thank you!! @Bee_see
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