The point (3k - 12, -2) lies on the y-axis.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
- The point lies on the y-axis. Find .
- The point lies on the x-axis. Find .
Need a reminder? The key ideaShow
A point is : go along the x-axis, then up or down. The signs choose the quadrant: I , II , III , IV . A point on an axis lies in no quadrant: on the x-axis, on the y-axis.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a). , so .
Step 2. (b). , so .
Answer: in (a) and in (b).
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