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Math Help - gradient of a y-intercept

  1. #1
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    gradient of a y-intercept

    y=10-1/2x
    how do i work out the y intercept
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  2. #2
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    Quote Originally Posted by alysha230893 View Post
    y=10-1/2x
    how do i work out the y intercept
    Substitute x = 0 and solve for y.
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  3. #3
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    is there a formula i can follow
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  4. #4
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    Yes- set x= 0 and solve for y!!! As soon as you set x= 0, you are going to have a serious problem which should tell you immediately that there is no y intercept.
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  5. #5
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    would the answer change if it was the gradient of the y intercept
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  6. #6
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    Quote Originally Posted by alysha230893 View Post
    y=10-1/2x
    how do i work out the y intercept
    I assume you mean y = 10 - (1/2)x.

    The simple formula is ..... substitute x = 0 and solve for y. Do you know what (1/2)(0) is equal to ....?
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