Respuesta :

y - y1 = m(x - x1)
slope(m) = -2
(3,1)....x1 = 3 and y1 = 1
now we just sub
y - 1 = -2(x - 3) <== point slope form
Y=-2x+7 because you would use points and put them into slope intersept form which is y=mx+b
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