Answer:
I added a picture of a coordinate plane below.
First of all, you should know that the first number should always be on the X-axis, and the second is always on the y-axis.
The x-axis is the horizontal line. The y-axis is the vertical line.
I have this little trick that will help you find the place to put the dot:
So, now you have to look for -4 on the x-axis. Put your finger on it.
Now, search for 6 on the y-axis. Put your finger on there once you found it.
Finally, push your finger on the -4 up, and push up your finger on 6 until they meet. That's where your dot will go.