Find the length please help

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

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.

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250