#straight-line graph problem

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fickle drift
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straight-line graph problem

dusk lava
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Find equation of the line AB, then sub the y and x points of C into the equation of the line

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if it lies on the straight line then when you sub the x and y coordinates in everything should be equal

fickle drift
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how do i find the equation of line ab

dusk lava
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then use the equation y = mx+c

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you know the value of m since its the gradient

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then you sub either point a or point b in to get the value of c

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then u get the general equation of AB

fickle drift
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i dont understand can you work it out for me