The equation below describes a parabola. if a is positive, which way does the parabola open? y = ax2

The parabola open upward

Step-by-step explanation:

we know that

The equation in vertex form of a vertical parabola is equal to

where

(h,k) is the vertex of the parabola

If -----> the parabola open upward and the vertex is a minimum

If -----> the parabola open downward and the vertex is a maximum

In this problem we have

  and

so

Is a vertical parabola

The vertex is the origin

The parabola open upward

The vertex is a minimum

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

dont think so

step-by-step explanation: