3.02 Quiz Graphs Of Lines

Question: The equation of a line is −6x − 2y = −18.

What is the x-intercept of the line?

Answer: 3

Question: The equation of a line is x + 4y = 15.

What is the y-intercept of the line?

Answer: 15/4

Question: What is the slope of the line passing through the points (2, −5) and (4, 1)?

Answer: 3

Question: Which ordered pair is a solution to this equation?

3x + 7y = 13

Answer: (2, 1)

Question: Select all statements that are true about the linear equation.

y = −x − 1

Answer: The graph of the equation is the set of points that are solutions to the equation.

The point (0, −1) lies on the graph of the equation.

A coordinate pair on the graph of the equation is a solution to the equation.

Question: Remember:

Answer: To graph a point, you start at the origin and move left or right along the x-axis according to the x-coordinate of the ordered pair. Then you move up or down according to the y-coordinate.

Question: Remember:

Answer: If the y-coordinate is 0, you will move left or right, but then stay on the x-axis. If the x-coordinate is 0, you will not move left or right, you just move up or down from the origin.