Make a table of points by choosing values for the x-coordinate.
Then substitute each into the equation y=x²-4 to find the value
for the y-coordinate:
x y=x²-4 point
-4 12 (-4,12)
-3 5 (-3,5)
-2 0 (-2,0)
-1 -3 (-1,-3)
0 -4 (-0,-4)
1 -3 (1,-3)
2 0 (2,0)
3 5 (3,5)
4 12 (4,12)
Plot all those points:
Sketch in the graph:
Edwin
