Lines parallel x or y axis
Last updated at Sept. 25, 2018 by Teachoo
Let's plot (0, 1) (0, 2) (0, 4) (0, −2) on the graph
All points in y-axis are like
(0, 1) (0, 2) (0, 4) (0, −2)
So x = 0 for all points in y-axis
∴ Equation of y axis is x = 0
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