Draw the graph of each of the following linear equations and answer the following questions.
i) y – x
ii) y = 2x
iii) y = – 2x
iv) y = 3x
v) y = – 3x
i) Are all these equations of the form y = mx; where m is a real number ?
ii) Are all these graphs passing through the origin ?
iii) What can you conclude about these graphs ?