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]} /