Coordinate Plane help?
1. M is the midpoint of AB
Find the coordinates of B given A(4,-2) and M(4,7).
A) (4, 2.5)
B) (0, -4.5)
C) (-1.5, -3)
D) (4, 16)
2. M is the midpoint of AB
Find the coordinates of B given A(3,8) and M(5,4).
A) (-1, 2)
B) (7, 0)
C) (4, 6)
D) (3.5, 6.5)
3. Theres a baseball diamond. If a player throws the baseball from 2nd base to home plate, how far does he throw it?
2nd base is (90,90) and home plate is (0,0)
A) 90Feet
B)45 square root 2feet
C) 180 Feet
D) 90 square root 2 feet
Favorite Answer
From A to M, the x coordinate does not change, so from M to B, the x value will still be 4. From A to M, the y coordinate increases by 9, so from M to B, the y value will increase to 16.
2 – B
Same as above. From A to M, x increases by 2, so from M to B, x will be increase to 7. From A to M, th y coordinate decreases by 4, so from M to B, the y value will decrease to 0.
3 – D
This gives us a right triangle with both sides equal to 90. So use a^2 + b^2 = c^2:
90^2 + 90^2 = c^2
16200=c^2
c = sqrt 16200
this simplifies down to 90 sqrt 2
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