In any parabola, the vertex is the turning point. And the x-coordinate of the vertex can be found using

So, in your case, you have

So, your equation actually looks like

Now impose the passing through (2,1), i.e. substitute x=2, y=1 and solve for b:

is there photos for this question? sorry im a lil confused on "what the following" are
Step-by-step explanation:
We are given two Triangles and we need to prove them congruent . In ∆AOC and ∆BOD , we have
Therefore by AAS congruent condition we can say that ,
Hence Proved!
Answer:
-1/32
Step-by-step explanation:
Find the slope using rise over run, (y2 - y1) / (x2 - x1)
Plug in the points, and simplify:
(y2 - y1) / (x2 - x1)
(9 - 8) / (-17 - 15)
1 / -32
= -1/32
So, the slope of the line is -1/32
Well you already know your side lengths, so you use this formula S=1/2(A+B+C). For A put in one of your side lengths, for B put one of your side lengths, and for C put one of your side lengths. After you do that solve. But your not done. Once you find out what S equals by doing the formula I just showed you, you have to do another formula which is A= S(S-A)(S-B)(S-C). Once again plug in your side lengths for A,B, and C but then plug in your S value. (Remember you already found your S value by doing the first formula I showed you). Then do the math and then you will find your answer.