qqp question1: Slope of the line represented by the parametric equations, [math]x=2t+1[/math] and [math]y=t-1[/math] is? question2: A line represented by [math]y = 3x − 1[/math] and a line perpendicular to it intersect at [math]R (1, 2)[/math]. What is the equation of the perpendicular line?