What are the slope and (y)-intercept of the line (y=12)?
Answer and explanation
Correct answer: Slope 0 and y-intercept 12
In the line y=12, the value of y remains 12 at every point, so it is a horizontal line parallel to the x-axis. A horizontal line has slope 0, and it meets the y-axis at (0, 12); therefore, its y-intercept is 12. In option D, the slope is correct, but a y-intercept of -12 would represent the line y=-12. Exam tip: For every line of the form y=c, the slope is 0 and the y-intercept is c.
Frequently asked questions
What is the correct answer to this question?
Slope 0 and y-intercept 12
Why is this the correct answer?
In the line y=12, the value of y remains 12 at every point, so it is a horizontal line parallel to the x-axis. A horizontal line has slope 0, and it meets the y-axis at (0, 12); therefore, its y-intercept is 12. In option D, the slope is correct, but a y-intercept of -12 would represent the line y=-12. Exam tip: For every line of the form y=c, the slope is 0 and the y-intercept is c.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Slope and y-intercept.
