Write the equation of the vertical and horizontal lines through ( - 1,9).

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?