Question

The graph of 3x + 2y = 6 meets the x=axis at point P and the y-axis at point Q. Use the graphical method to find the co-ordinates of points P and Q.

Answer 1

To draw the graph of 3x + 2y = 6 follows the steps:
First, prepare a table as below:

X	- 2	0	2
Y	6	3	0

Now sketch the graph as shown:

From the graph it can verify that the line intersects the x-axis at (2,0) and y at (0,3), therefore the coordinates of P(x-axis) and Q(y-axis) are (2,0) and (0,3) respectively.