The given functions are:
It is required to graph the functions, and then find the solutions of the equation:
To find the solution to the equation, it is sufficient to find the points of intersection of the drawn graphs. The x-coordinate of these points of intersection is the required solution.
We will start by using points to graph the equations:
Find some values of the function f(x)=-6x+2.
For x=0, substitute x=0 into the function:
It follows that a point on the graph is (0,2).
For x=1, substitute x=1 into the function:
Hence, another point on the graph of f(x) is (1,-4).
For x=2, substitute x=2 into the function:
Hence, a third point on the graph is (2,-10).
Plot these points on a graph as shown:
Join these points to draw the graph of f(x):
Using the same procedure as in the first function, that is finding points for some x-values, the graph of g(x) is shown in purple:
Locate the points of intersection of the graphs of f(x) and g(x):
The points of intersection labeled are (0,2) and (2,-10).
The x-coordinates of the points (0,2) and (2,-10) are the solutions of the equation, that is, x=0, x=2.
The solutions of the given equation are x=0 and x=2.