Question

What is the focus of the following graph?

Answer 1

the focus is the same distance away from the vertex as the directix is, but inward

Answer 2

so -4?

Answer 3

@amistre64

Answer 4

not -4

Answer 5

where is your vertex located?

Answer 6

im not exactly sure..

Answer 7

the focus is located by a distance from the vertex, if you have no idea what the vertex is ..... then youre asking the wrong question :/

Answer 8

if you were to take a guess, what would your best guess be?

Answer 9

hmm..3? where the straight line is?

Answer 10

thats something we can work with:

the line itself is called a directix; and its distance away from the vertex is important to us.

the place where the curve is bending and turning the opposite direction is called a vertex

Answer 11

so 4?