Hello there. To graph this function, the best way is to find two points that are into the line and then pass a line through them.
Since the image of a line is all the real numbers, we can pick any point for x and find y that satisfy it.
Starting with x = 0, we have that f(0) = -3 * 0 + 4 = 4.
So the point (0, 4) is in the line.
Now, making x = 1, we have that f(1) = -3 * 1 + 4 = -3 + 4 = 1
So the point (1, 1) is in the line.
Graphing the function, we have:
This is the graph of this function.