Question

(Please help me) Find each of the following based on the points being on the number line.

6. Find the length of __
PD if the coordinate of P is -7 and coordinate of D is -1.

7. Find the length of __
SK if the coordinate of S is 17 and the coordinate of K is -5.

8. Find the coordinate of B if
__
AB = 8 And the coordinate of A is -2.

9. Find the coordinate of X if
__
XY = 1 and the coordinate of Y is 0.

Answer 1

length can be found using: XY = |x - y|

6) PD = |P - D| = |-7 - (-1)| = |-7 + 1| = |-6| = 6

7) SK = |S - K| = |17 - (-5)| = |17 + 5| = |22| = 22

8) AB = |A - B|

8 = |-2 - B|

8 = -2 - B or -8 = -2 - B

10 = -B or -6 = -B

-10 = B or 6 = B

9) XY = |X - Y|

1 = |X - 0|

1 = |X|

1 = X or -1 = X