Is x/y is rational, must x and y each be rational

Astudent simplified a rational expression as shown.

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.