Step-by-step explanation:
For each value of x you will have a y value
Step 1: Make a Chart with values
X | 1 2 3
Y |
Step 2: Substitute the x values in the y function
y= 2(1) - 1
y=2-1
y=1
Step 3: Fill the Chart with the obtained values
X | 1 2 3
Y | 1
Step 4: Plot the points as coordinates (x, y) i.e (1,1)
Step 5: Connect the points
Step 6: Be happy, you just learn how to plot. You can follow this proccedure for any kind of function.