Parallel lines have the same slope. What happens if they have the same y-intercept as well?
The classmate is correct. Explanation: See solution.
Practice makes perfect
Parallel lines are lines that have the same slope but that are not the same line. If two lines with the same slope also have the same y-intercept, they will be the same line.
The two lines are not parallel lines as they coincide. Therefore, our classmate is absolutely correct.
