If x and y are positive, is x-y always positive?

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

Which of the following statement about pascal's triangle are true?

Is the point (0, 8) on the x-axis or y-axis? how do you know?