The vertex is (-2,4); The y-intercept is (0,0) or simply y = 0
Here, we want to get the vertex and the y-intercept of the given plot
To get the vertex, we look at the tip of the curve before it comes down
We can see this at the point (-2,4)
The y-intercept is the value of y at which the curve crosses the y-axis
As we can see, the plot crosses the origin before intersecting more points on the y-axis
Thus, we can conclude that the value of the y-intercept is y = 0 or simply the point (0,0) which indicates the origin