How do i graph a rational function with a y intercept. example 3x^2-1/2x+4 +1

Basically see where it intersectst the y axis
that is where x=0
so set x=0 and solve
3(0)^2-1/2(0)+4+1
4+1
5
the y intercept is at y=5, so yo uknow that (0,5) is on the graph

Ithink it would be 160 people