What is the axis of symmetry and vertex for the graph #y= -3x^2 + 4 #?
The y-axis is the axis of symmetry and vertex is (0;4)
You should notice that:
1.) It is a quadratic (
2.) The value of
3.) There is no
4.) The constant term,
All points on the y-axis have the form (0;y)
Hence the vertex, or turning point, is the point (0,4).