What is the slope of the line that passes through 2,-1 and 2,-5

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)