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Mathematics 15 Online
OpenStudy (anonymous):

Find the direct variation equation of the graph through the points (0, 0) and (1, -2). Write in y=kx form. A.y = 2x B.y = -2x C.y = 1/2 x D.y = -1/2 x

hartnn (hartnn):

y=kx plug in x=1, y=-2 in this to find k . -2 = k*1 k=... ?

OpenStudy (anonymous):

k= -2x ? @hartnn

hartnn (hartnn):

yes! k =-2 only. so the equation will be y=-2x :)

OpenStudy (anonymous):

Yes! Thank you very much! :) @hartnn

hartnn (hartnn):

welcome ^_^

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