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    Could someone please explain the answer to June 2014 question 4c - attached

    The solution is a=2 b=6 but I cannot work out why.

    Thanks
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  1. File Type: pdfQuestion-paper-Unit-C3-(6665)-June-2014.pdf (196.3 KB, 30 views)
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    (Original post by AnIndianGuy)
    a is essentially the gradient of the line, and you can use points P and Q respectively to calculate it,

    You could sub in the co-ordinates of Q to calculate b!
    It makes perfect sense now. Thanks.
 
 
 
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