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Mathematics 8 Online
OpenStudy (anonymous):

need to figure out how to solve equation with three variables

OpenStudy (anonymous):

You need three equs

OpenStudy (anonymous):

how do u set it up?

OpenStudy (amistre64):

the setup depends on the question being asked

OpenStudy (anonymous):

example like 2x - 6y - 3z = 12 how do i break it down to find x y z?

OpenStudy (amistre64):

thats an equation for a surface

OpenStudy (amistre64):

there are no single x,y, or z values; that I can determine

OpenStudy (amistre64):

You can define three different planes in which they interact on by making one of the variables a constant, say 0, and drawing the line for the plane

OpenStudy (anonymous):

It would have to be a system on linear equations

OpenStudy (anonymous):

*of

OpenStudy (amistre64):

nadeem is a name i aint seen in a long time :)

OpenStudy (anonymous):

the whole question says Find the x-, y, and z-intercepts for the equation. Enter your answers separated by commas; example: -2, 3, 4. 2x - 6y - 3z = 12

OpenStudy (anonymous):

hahaha... its good to be back

OpenStudy (kirbykirby):

That's a different question then : You just set the other two variables to "0" and solve for whatever yoo're looking for. If you need to look for y-intercept, set x and z to 0

OpenStudy (anonymous):

k ty

OpenStudy (anonymous):

if i set x and z to 0 that only leaves 6y?

OpenStudy (anonymous):

I dont no if I did it write i got x=4

OpenStudy (amistre64):

2x - 6y - 3z = 12 ; /12 2x 6y 3z --- - ---- - ---- = 1 12 12 12 x y z --- - --- - --- = 1 ; x(6,0,0) y(0,-2,0) z(0,0,-4) 6 2 4 something like this id assume

OpenStudy (amistre64):

OpenStudy (anonymous):

k thanks

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