2017-04-10 SFXC F.5C Linear Programming 01
- 作者：
- johnmayhk
Please answer following questions.
Q.1 Given that the line L passes through P(2,1) with slope = -3/4. Write down the equation of L.
Q.2 Q is a point on L, drag Q. If x, y are the x-coordinate and y-coordinate of Q, what is the value of 3x+4y?
Q.3 Translate L upwards by dragging P. If x, y are the x-coordinate and y-coordinate of P, what is the change
in the value of 3x+4y?
Q.4 Translate L downwards by dragging P. If x, y are the x-coordinate and y-coordinate of P, what is the change in the value of 3x+4y?
Q.5 Can you explain why the changes mentioned in Q.3 and Q.4?