Which mathematical term cannot be precisely defined?

Match the one-to-one functions with the graphs of their inverse functions.

Solve the system of equations. x=-2y+1 and x+2y=9. show work

You are living in aldine, tx and you are planning a trip to six flags in arlington, tx. you look on a map that has a scale of 0.5 inches to 30 miles. if the map shows the scale distance from aldine to arlington is 4 inches, how far is the actual distance?