00:02
Alright, so the first one is a parabola that opens sideways.
00:11
It's, what do we need, type parabola, eccentricity is 1 for a parabola.
00:20
The diuretics is x equals negative a, which when we solve this we get, you have to have x equals, the equation is x equals 1 third y squared, so the diuretics is negative 1 third for the parabola.
00:43
The h and k is zero comma zero, so when you're graphing at that point there is at zero comma zero.
00:55
Oh right, c, so of course that's zero comma zero also.
01:02
When y is zero, x is zero, so there's that.
01:09
The next one was a hyperbola opening sideways, horizontally, so it will look like this.
01:19
H and k is zero zero, so of course that's zero zero there.
01:23
The asimotopes to help you graph going this way is y equals plus or minus 2 over 3 x, because you have b squared is 4, a squared is 9, so b over a is 2 over 3.
01:46
What else we need to do? c, when y is zero you would just have x squared over 9 equals 1, so x is, so here we got plus or minus 3, plus or minus 3, that's that, that's that, that point zero zero.
02:13
What else? eccentricity, eccentricity is the square root of 1, whoops, 1 plus b squared over a squared.
02:28
So b squared is 4, a squared is 9, so 4 over 9 plus 1, then take the square root, should get a 1 .20...