Draw the graph of y=3x for values of x from −2 to +2, plotting at least nine points. [Take 2cm as unit on the axis of x, and 1cm as unit on the axis of y.]
Use your graph to find
- the roots of the equation 3x=3x+2,
- the range of values of k for which the equation 3x=kx has no real roots.
[The instructions suggested that squared paper should be used and that for us, the use of calculators is allowed.]