Y= –8 – 4x – 3x2write the equation of the axis of symmetry.

y = –8 – 4x – 3x2

Step-by-step explanation:

Given its parameters, we know that this quadratic equation represents a parabola with arms pointing down, and with a maximum value at the point of its vertex.

The equation of its axis of symmetry will be a vertical line that goes through that vertex.

Recall that vertical lines have the form: .

It is essential then that we find the x coordinate of such vertex to complete the general equation form of this vertical axis.

We use the definition for the x value of the vertex of a parabola of the form:

In our case where

the x-value of the vertex becomes:

Therefore, the equation for the axis of symmetry of the parabola is:

the 4th choice is the correct one

step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.