if YZ=10 and Y lies at -5, where would Z be located?

Question

Suppose that Y and Z are points on a number line

 

Answer 1

Z is either 10 units to the left of -5 or 10 units to the right of -5.

 

So, Z = -15 or 5

Answer 2

Solve this equation for Z.

 

-5Z = 10