How do you find the vertex & graph?
y=.3x^2 + 1.8x - 2
The vertex is always on the line of symmetry of the parabola. For up or down opening parabolas this is always the line x = -b/(2a) where the parabola is of the form y = ax^2 + bx + c. (This gives the x value so you can find the y value yourself.)
In your case you know the parabola opens upward since a > 0.