For the second question, could you explain the difference between C and D, and why you think one or the other is more "correct"
The answer was indeed D
I'm doing 4U atm, and I think that it is NOT worth the time if you are good at maths, esp if you are confident in getting 94+ in 3U
English will most likely be affected as 4U becomes a distraction (as it is too intriguing), so no, do not pick it up
First let's re-write in general form:
(x-3)^2 + (y+k)^2=k^2-3k+9
For C1: Centre = (3,-k). Sub this into x-3y=0 -> yielding k=-1
For C2: Centre = (3,-k). Therefore we want to find y-coordinate. But y-coord is also = radius (as the circle touches the x-axis)
Therefore k=Sqrt (k^2-3k+9)
Square...
MC is an indication of your knowledge, rather than roted information (in Phy anyways)
i.e. do you REALLY understand/know how to apply Lenz's law in all situations??? (Check past hsc, notorious for these weird lenzs Qs)
Last day at my school:
"Boys, we're gonna blow this place up"
Nek minnit, bins start exploding and the alarm for fire goes off, entire school evacuates
#worththesuspension