A parabola with an equation, y2 = 4ax has its vertex at the origin and opens to the right.
It's not just the '4' that is important, it's '4a' that matters.
This type of parabola has a directrix at x = -a, and a focus at (a, 0). By writing the equation as it is, the position of the directrix and focus are readily identifiable.
For example, y2 = 2.4x doesn't say a great deal. Re-writing the equation of the parabola as y2 = 4*(0.6)x tells us immediately that the directrix is at x = -0.6 and the focus is at (0.6, 0)
4(8x-2)
Distribute the 4
So it should be 32x-8
Hope it helps
Answer: point W
Step-by-step explanation:
Answer:
13. Slope: -3
14. D ; y = 18
15. ?
Step-by-step explanation:
13. 4 - 1 = 3
-3 - 6 = -9
3/-9 = -3
Answer:
26.0cm
Step-by-step explanation:
sin35=12/BD
BD=20.9cm
20.9/sin52=CD/sin102
CD=26.0
