91Ó°ÊÓ

Solve, justifying each step. \(3 x-8=7 x+8\).

Draw the graphs of the following equations: (1) \(\mathrm{y}=4 \mathrm{x}+9\) (2) \(\mathrm{y}=\mathrm{x}^{2}+2 \mathrm{x}+9\) (3) \(\mathrm{y}=\mathrm{x}^{3}\)

Investigate each of the following equations, determine the intercepts and symmetry, and draw the graph. (1) \(x^{2}+y^{2}=9\) (2) \(2 \mathrm{x}^{2} \mathrm{y}-\mathrm{x}^{2}-\mathrm{y}=0\)