Understanding What Units Compute
	• Suppose you have a 2-input unit with a step function and a fixed threshold t. • Let x, y be inputs. • What set of points on the x-y plane are at the unit's threshold? (Simplify equations.) • Answer: The line Wx,i´x + Wy,i´y = t – rewritten: y = (-Wx,i/Wy,i)x + (t/Wy,i)