Choose the function that represents the data in the table. X
0
0
1
3
2
12
3
27
4
48
cho
y
O y = x2
O y = 3x2
O y = x2 + 3
y = 2x + 3

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.