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he66666

  • 5 years ago

Vectors: Sketching planes in 3D space? How do you sketch 3x-4z-12=0? I know x-intercept is 4 and z-int is -3 but I get confused on how to draw the plane when z-intercept is a negative. Can somebody please help me?

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  1. mathteacher1729
    • 5 years ago
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    Drawing these by hands can be tricky. How do you feel with sketching planes with positive intercepts?

  2. he66666
    • 5 years ago
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    i can draw them with positive intercepts.. it's just that negative z-intercepts confuse me somehow :S

  3. mathteacher1729
    • 5 years ago
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    Here's a quick sketch. Lemmie know if this helps.

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  4. mathteacher1729
    • 5 years ago
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    There's another. Basically sketch it in the xz plane and then "stretch" it back in the y direction. We choose xz because we know where the intercepts are.

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  5. he66666
    • 5 years ago
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    How do you "read" the graph? I'm only used to xyz graphs (like the actual bar graphs)

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