Graphing Lines Using X and Y Intercepts

The video tutorial explains how to identify the x and y-intercepts of the line y = 3x - 9. It describes the process of finding the x-intercept by setting y to 0 and solving for x, and finding the y-intercept by setting x to 0 and solving for y. The tutorial then demonstrates how to graph the line using these intercepts, emphasizing the importance of understanding the coordinate system and the relationship between the line and the axes.

What is the equation of the line discussed in the video?

• y = -3x - 9

• y = -3x + 9

• y = 3x + 9

• y = 3x - 9

What is the y-value at the x-intercept?

• 3

• 0

• -9

• 9

How do you find the x-intercept of a line?

• Set x to 9 and solve for y

• Set x to 0 and solve for y

• Set y to 0 and solve for x

• Set y to 9 and solve for x

What is the x-value at the y-intercept?

• 9

• 0

• 3

• -9

What are the coordinates of the x-intercept?

• (3, 0)

• (0, 3)

• (0, -9)

• (-9, 0)

What operation is performed to isolate the x-term in the equation 0 = 3x - 9?

• Add 9 to both sides

• Subtract 9 from both sides

• Multiply both sides by 3

• Divide both sides by 3

What are the coordinates of the y-intercept?

• (-9, 0)

• (0, 9)

• (9, 0)

• (0, -9)

How many points are necessary to graph a line?

• Three points

• One point

• Four points

• Two points

What is the result of 3 times 0 minus 9?

• -9

• 9

• 0

• 3

What tool is mentioned as missing for drawing a straight line?

• Ruler

• Compass

• Calculator

• Protractor