Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. which equation represents the average of the x-intercepts for f(x) = 4x2 – 24x + 20?

x = 3 is the line of symmetry.

Step-by-step explanation:

In this question we have to find the equation of line of symmetry which is the average of x-intercepts.

Given quadratic function is f(x) = 4x² - 24x + 20

Now we know line of symmetry is denoted by x = -

From the quadratic function

a = 4

and b = -24

therefore, equation of symmetry will be x = -

x = 3

Therefore, x = 3 is the line of symmetry for the given function.

yes. we do proportions in probabilities.