Answer
Part a:
This part is already solved in the question:
Part b:
The graph is shown at the bottom
Part c:
The given equation is:
6 - 2x = 3
-2x = 3-6
-2x = -3
2x = 3
x = 3/2
x = 1.5
This can also be solve by seeing the graph. The equation which was given to us was y = 6 - 2x, and in this part we have to find the value of 3 = 6 -2x , which means y=3.
We can see in the graph that y = 4 when x = 1 and y = 2 when x = 2, so as y=3 is the midpoint of 4 and 2, the values corresponding to y = 3 should be midpoint of 1 and 2 i.e 1.5
