I don't understand how to do this, please help.

a line GO THRU points

points: (2,-3) & (3,-5)

deltax=1, deltay=-2, slope=deltay/deltax=-2/1=-2

y=-2x+konst

projekt line from 2 tu 0...deltax=-2, deltay=deltax*slope=-2*(-2)....=+4

at x=0, y=-3+4=1

y=-2x+1

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