.

2.5 Curve sketching

1.

(a) $${x = \frac{1}{3}, y = \frac{1}{3}}$$ (b) $${x = 2, y = x+2}$$ (c) $${x = \pm 3, y = 0}$$

2.

(a) $x = 0$ vertical tangent line (b) $x = 0$ vertical cusp (c) $x = 2$ vertical cusp.