(a)f(x)
(b) the y-int of the graph
5. There exists a graph y=(k-1)x+2k where k is larger than 1 .It cuts the x-axis and the y-axis at pts A and B respectively, if the area of triangle AOB is 9 sq.units ,find all the possible values of k.
更新1:
any shorter steps for 4.? its too long i aim.fast in exam
更新2:
thanks!
更新3:
and also for no.5, how can u find the coordinates of A?
更新4:
looking to your reply����