Question

Points Y and Z are the same distance from point X on a number line. The coordinate of point X is –7 and the coordinate of point Y is –1.

What is the coordinate of point Z?

Answer 1

y anz at same distance from x means x is midpoint of y and z

Answer 2

-13

Answer 3

At noon, the atmospheric pressure at a weather station was 763 mmHg. At 4 p.m., the atmospheric pressure had changed by 29 mmHg.

Which expressions could represent the atmospheric pressure at the weather station at 4 p.m.?

Choose two answers that are correct.

A.
(29 – 763) mmHg

B.
–(763 + 29) mmHg

C.
(763 – 29) mmHg


D.
(763 + 29) mmHg