91Ó°ÊÓ

Plot the given points in a coordinate plane: $$ (2,3),(-2,3),(4,5),(4,-5),(-4,5),(-4,-5) $$

Find the slope of the line through \(P\) and \(Q .\) \(P(0,0), Q(4,2)\)

1–6 ? Determine whether the given points are on the graph of the equation. $$ y=3 x-2 ; \quad(0,2),\left(\frac{1}{3}, 1\right),(1,1) $$

Use a graphing calculator or computer to decide which viewing rectangle \((\mathrm{a})-(\mathrm{d})\) produces the most appropriate graph of the equation. $$\begin{array}{l}{y=x^{4}+2} \\ {\text { (a) }[-2,2] \text { by }[-2,2]} \\\ {\text { (b) }[0,4] \text { by }[0,4]} \\ {\text { (c) }[-8,8] \text { by }[-4,40]} \\ {\text { (d) }[-40,40] \text { by }[-80,800]}\end{array}$$

1–6 ? Determine whether the given points are on the graph of the equation. $$ y=\sqrt{x+1} ; \quad(1,0),(0,1),(3,2) $$

Use a graphing calculator or computer to decide which viewing rectangle \((\mathrm{a})-(\mathrm{d})\) produces the most appropriate graph of the equation. $$ \begin{array}{l}{y=x^{2}+7 x+6} \\ {\text { (a) }[-5,5] \text { by }[-5,5]} \\\ {\text { (b) }[0,10] \text { by }[-20,100]} \\ {\text { (c) }[-15,8] \text { by }[-20,100]} \\ {\text { (d) }[-10,3] \text { by }[-100,20]}\end{array} $$

1–12 ? Write an equation that expresses the statement. \(P\) is directly proportional to \(w\)

Find the slope of the line through \(P\) and \(Q .\) \(P(0,0), Q(2,-6)\)

Find the slope of the line through \(P\) and \(Q .\) \(P(2,2), Q(-10,0)\)

1–6 ? Determine whether the given points are on the graph of the equation. $$ x-2 y-1=0 ; \quad(0,0),(1,0),(-1,-1) $$