Question

What is the focus of this graph?

Answer 1

see the red line?

Answer 2

Yeah*

Answer 3

well, that seems to be the Directrix of the parabola, the distance from the directrix to the vertex, and from the focus to the vertex, is EXACTLY the same

Answer 4

that is so in a parabola

Answer 5

So it would be 5?

Answer 6

well, that's the y coordinate, but the focus is a point, not a line, so you also need the x coordinate.

Answer 7

(1,5)

Answer 8

good job!

Answer 9

thank you!