Check the graph below, please.
1) To Graph this function, a linear function with a slope of -1 i.e. a decreasing one, we need first to set a table
x | y= -x +17
0 y = -(0) +17 = 17
1 y = -(1) +17 = 16
2 y= -(2) +17 = 15
So let's locate on the graph the points (0, 17), (1,16), and (2,15):
Since the slope is -1 from -x then we can trace a decreasing line passing through: