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20-06-2017
Mathematics

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find the equation of the line below. Points (1, -2) (2,-4)

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schvelle schvelle

23-06-2017

gradient of line : ( -4-(-2) ) / ( 2-1 ) = -2
sub ( 1 , -2 ) into y1-y2 = m ( x1 - x2)
y - (-2) = -2 ( X - 1 )
y + 2 = -2x +2
Eqn of line : y = -2x

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