Question

I need help with this can someone help me?
1. Suppose a and b are real numbers where a > 0 and b < 0.
a. Is –a + b positive or negative. Explain how you know.
b. Is a – b positive or negative? Explain how you know.
c. Is b – a positive or negative. Explain how you know.

Answer 1

b. \[if \left| b \right|=a,then~a-b=0\]
\[if ~\left| b \right|>a,then~a-b ~is~negative.\]
\[if~\left| b \right|<a,then~a-b~is~positive.\]

Answer 2

c is same as a.

Answer 3

ok