slope intercept form is y-y1=m(x-x1) where the slope of the line is m and it passes through the point (x1,y1)
given that it passes through (-6,4), x1=-6, y1=4
y-y1=m(x-x1)
y-4=m(x-(-6))
y-4=m(x-6)
that's the equation, except we need the slope now
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