The graph of a relation of the form: (x^2+y^2)^2 + 4Bx(x^2+y^2)-4B^2y^2=0 a) If B=2 is a cardioid, use implicit differentiation to find a rule for the slope of the tangent line of the graph of your cardioid at any point (x,y) on the graph b) Pick a point (a,b) on the graph of your cardioid and then use your result above to find an equation for the tangent line to the graph of your cardioid at the point (a,b) you've picked