Calculating Line Segment Lengths

Brandon Grizzly, a high school math teacher, explains how to find the length of a line segment AB using algebraic methods. He starts by plotting the points A(-5, -3) and B(4, -1) on a graph, then describes the properties of line segments. He proceeds to calculate the length using the distance formula, demonstrating each step clearly. The final result is both exact and approximate, highlighting the difference between the two.

Who is the narrator of the video?

• Jane Smith

• John Doe

• Michael Johnson

• Brandon Grizzly

What are the coordinates of point A?

• (-5, -3)

• (4, -1)

• (0, 0)

• (5, 3)

What is the significance of not extending the line segment beyond the points?

• It indicates a circle.

• It forms a triangle.

• It represents an infinite line.

• It shows a finite segment.

What is the first step in calculating the length of a line segment?

• Add the x-values.

• Subtract the y-values.

• Multiply the coordinates.

• Find the difference in x-values.

What do you do after finding the difference in x-values?

• Add them together.

• Multiply by 3.

• Square the difference.

• Divide by 2.

What is the formula used to calculate the length of a line segment?

• x1 + x2 + y1 + y2

• (x2 - x1) * (y2 - y1)

• x2 - x1 + y2 - y1

• Square root of [(x2 - x1)^2 + (y2 - y1)^2]

What is the result of 4 minus negative 5?

• 1

• 9

• -1

• 0

What is the square of 9?

• 45

• 81

• 27

• 18

What is the square of 2?

• 8

• 4

• 2

• 6

What is the square root of 85 approximately?

• 8.5

• 9.22

• 10.5

• 7.9