# How do you find the intercepts, vertex and graph #f(x)=-0.25x^2-3x#?

##### 1 Answer

Oct 16, 2016

Vertex is

Intercepts are

#### Explanation:

Calculate first derivative

Let

So

Calculate the second derivative

So we have a minimum which is

Intercept with the y- axis when

Intercept with the y-axis when

So

So the point is

Here is a sketch of the graph

graph{0.25x^2-3*x [-20, 20, -10, 10]} /