Midpoint and Distance Formulas

Find the distance between (-4, 5) and (7, 18).

• 15.96
• 16.08
• 16.23
• 17.03

Find the distance between (-5, -8) and (-1, -16).

• 8.9
• 9.8
• 10.3
• 11

How is the distance formula correctly written:

Find the length of the side CD.

• 9 units
• √34
• √5
• 3 units

Which of the following is the correct midpoint formula given two endpoints (x₁, y₁) and (x₂, y₂)?

• 
• 
• 
• 

• (-3,6)

• (6,-3)

• (4,4)

• none

What point is halfway between (3, -1) and (8, -6)?

• (11, -7)
• (-5.5, -3.5)
• (5.5, -3.5)
• (2, -2)

Find the other endpoint of the line segment with the given endpoint (4,0) and midpoint (-2,8)

• (3,-4)

• (-8,16)

• (2,3)

• (5,9)

Find the length indicated.

Write an equation that correctly models the lengths shown.

• 2x + 20 + x + 21 = 9

• 2x + 20 + 9 = x + 21

• 9 + x + 21 = 2x + 20

• 2x + 20 - 9 = x + 21