## What is the equation of the directrix of the parabola calculator?

The directrix is y = d y = d y=d.

## What is focus and Directrix?

What are the focus and directrix of a parabola? Parabolas are commonly known as the graphs of quadratic functions. They can also be viewed as the set of all points whose distance from a certain point (the focus) is equal to their distance from a certain line (the directrix).

**How do you find the Directrix and focus of an equation?**

Focus & directrix of a parabola from the equation So the focus is (h, k + C), the vertex is (h, k) and the directrix is y = k – C.

**What is Directrix formula?**

The axis of the parabola is y-axis. Equation of directrix is y = -a. i.e. y = -½ is the equation of directrix.

### What is the formula for Parabola directrix?

Parabola Directrix : Parabola X Intercepts : Parabola Vertex Focus Calculator Formulas (Y = aX2+ bX + c, a≠0) • Focus X = -b/2a • Focus Y = c – (b2- 1)/4a • Vertex X = -b/2a • Directrix Y = c – (b2+ 1)/4a

### How do you calculate the focus of a parabola?

( Parabola Grapher Online) Y =X2 + X + Parabola Vertex : Parabola Focus : Parabola Directrix : Parabola X Intercepts : Parabola Vertex Focus Calculator Formulas (Y = aX2+ bX + c, a≠0) • Focus X = -b/2a • Focus Y = c – (b2- 1)/4a • Vertex X = -b/2a • Directrix Y = c – (b2+ 1)/4a

**How to calculate parabola x intercepts?**

Parabola X Intercepts : Parabola Vertex Focus Calculator Formulas (Y = aX2+ bX + c, a≠0) • Focus X = -b/2a • Focus Y = c – (b2- 1)/4a • Vertex X = -b/2a • Directrix Y = c – (b2+ 1)/4a • X Intercept = -b/2a ± √(b * b – 4ac)/2a,0

**What is the formula for Parabola Grapher?**

Parabola Calculator ( Parabola Grapher Online) Y =X2 + X + Parabola Vertex : Parabola Focus : Parabola Directrix : Parabola X Intercepts : Parabola Vertex Focus Calculator Formulas (Y = aX2+ bX + c, a≠0) • Focus X = -b/2a • Focus Y = c – (b2- 1)/4a • Vertex X = -b/2a • Directrix Y = c – (b2+ 1)/4a