How can you use a sequence of transformations to show that one figure is congruent to another

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.

How do i i solve this equation? -18 = x/3 + 3

Given: m zade = 60° and m2cdf = (3x + 15) prove: x = 15