The graph of a function h is shown below.

Find h(0) and find one value of x for which h(x)=-2.

 

If a = , b = and c = , find (i) the angle between a and b. (ii) the value of m for which b and c are perpendicular. (iii) the unit vector of 2a.

Use the graph of each function given to (a) state the domain, (b) state the range, (c) evaluate f(2), and (d) find the value (s) x for which f(x) +k(k a constand).