Question 756195
y = 5x^2 - 11
put in standard form of a quadratic equation to get:
5x^2 - 11 = 0
a = 5
b = 0
c = -11
axis of symmetry is given by the equation:
x = -b/2a
with the given values of b and a, this becomes:
x = 0
the equation is maximum or minimum at x = 0
when x = 0, the value of y is equal to -11
the max/min point is (0,-11)
this point is a minimum because the coefficient of the x^2 term is positive.
the graph is shown below:
{{{graph(600,600,-10,10,-20,20,x^2-11)}}}