Question

write the equation of three lines that are i)parallel to x axis
ii)parallel to y axis​

Answer 1

parallel to x axis

y=constant

y=k

parallel to y axis

x=constant

x=k

Answer 2

Answer:

Tip #1

For a line that is parallel to the x-axis, the equation for such a line is:

y = b, where b is some constant

Now, notice that b is the value of the y-coordinate of any point on the line. For example, if b = -2, the equation of the line parallel to the x-axis will be:

y = -2

equation of a line parallel to the x-axis

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Tip #2

Similarly, for a line that is parallel to the y-axis, the equation for such a line is:

x = a where a is some constant

Also, notice that a is the value of the x-coordinate of any point on the line. For example, if a = 1, the equation of the line parallel to the x-axis will be:

x = 1

The math video below will show you the reason behind this.