Question 830240
A line has a slope of -1 and passes through the points 4,2,3and y.What it's the value of y.


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{{{m = (y[2] - y[1])/(x[2] - x[1])}}}


{{{-1 = (y-2)/(3-4)}}}


{{{-1 = (y-2)/(-1)}}}


{{{-1*(-1) = y-2}}}


{{{1 = y-2}}}


{{{1+2 = y}}}


{{{3 = y}}}


{{{y = 3}}}