[ 1 ] check whether -3 and 3 are the zeroes of the polynomial x² - 9. [ 2 ] Draw the graph of (i) y = 2x + 5, ( ii ) y = 2x - 5 ( iii ) y = 2x and find the point of intersection on x - axis. Is the x-coordinates of these points also the zero of the polynomial ?

[ 3 ] Draw the graphs of (i) y = x² - x - 6 ( ii ) y = 6 - x - x² and find zeroes in each case. What do you Notice?
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