Make a table of values from -10 to +10 for x,
and solve for y. I'll do one of them for you, say when x=-7
x | y
-10 | 5
-9 | 4.05
-8 | 3.2
-7 | 2.45
-6 | 1.8
-5 | 1.25
-4 | 0.8
-3 | 0.45
-2 | 0.2
-1 | 0.05
0 | 0
1 | 0.05
2 | 0.2
3 | 0.45
4 | 0.8
5 | 1.25
6 | 1.8
7 | 2.45
8 | 3.2
9 | 4.05
10 | 5
Then plot them:
Then connect them with a smooth curve:
Edwin