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rywisely

  • one year ago

Can someone please explain to me how to find the X intercept for an equation like y=4 and the Y intercept for an equation like x=3? I completely forgot. Thanks!

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  1. hartnn
    • one year ago
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    If we are given an equation like y = f(x) to get X- intercept, we plug in y=0 to get Y- intercept, we plug in x=0 For equations you mentioned, y =4, to get X-intercept, if you plug in y=0, you get 0=4 which is FALSE! so you can conclude, there is no X-intercept.

  2. hartnn
    • one year ago
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    another way to look at this y =4 is a HORIZONTAL line! which is 4 units away from X axis, and it is parallel to X-axis! So it will NEVER meet the X-axis! hence there will be no X-intercept :) |dw:1439019802115:dw|

  3. hartnn
    • one year ago
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    can you do similar analysis using both the methods for x=3 ?? :)

  4. rywisely
    • one year ago
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    Ohhh, okay, I understand now. So, for x=3, it would be a vertical line three units to the right of the y-axis. Because of this, there wouldn't be a y-intercept. Correct? Thank you so much, you're a lifesaver. :)

  5. hartnn
    • one year ago
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    yes, correct :) good! and welcome ^_^

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