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How do you graph the line y=3?

Answer
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Hint: The given equation of the line is independent of x variable. Hence, we can say that this line is parallel to the X axis but passing through points with constant y coordinates.

Formulas used: The standard given of a line passing through a point (x,y), y=mx+c, where m is the slope of the line and c is the y-intercept.

Complete step-by-step answer:
We know that,
y=mx+c ------(1)
is the standard equation of a line.
Here, we are given the equation
y=3-----------(2)
Comparing equations (1) and (2), we can say that,
m=0 and c=3.
That is, the slope of the line is zero.
The line is parallel to the X axis.
Also, the line has y-intercept at (0,3).
Thus, we can conclude that y=3 is a line having slope zero and passing through (0,3).
Now, let us plot the line in a graph as shown:
seo images


Additional information:
The standard equations of some special lines:
Parallel to X axis: y=a, where a is any constant.
Parallel to Y axis: x=b, where b is any constant.
Passing through the origin: y=mx, where m is the slope of the line.

Note: The plotting of a line requires at least one of the following requirement as below:
There must be at least two distinct points.
There must be an equation of the line.
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