Explanation:
Given the line:
A line of the form y=c, (where c is a constant) is a horizontal line passing through y=c.
To plot the line y=3:
• Pick any two values of x, say 1 and 2.
,
• Pair it with the y-value being 3.
The points are (1,3) and (2,3).
Answer:
The line y=3 is graphed below with the two points shown: