Answer:
-6
Step-by-step explanation:
substitute
(2 + 3) -11
5 - 11
-6
Answer:
sooooo
Step-by-step explanation:
soooo
Answer:
#3 - y=4
#4 - x=-1
Step-by-step explanation:
With #3 you are only puting the y-value.
With #4 you are only putting the x-value.
[x-(-1+i)][x-(-1-i)]
[(x+1)-i][(x+1)+i]
(x+1)²-i²
(x²+2x+1)+1
x²+2x+2
so the answer is 2x
We know this is an upside down parabola because the vertex is higher than the point. So it will have a negative leading coefficient or "a" value. We have this then as our standard form:
where h and k are the coordinates of the vertex and x and y are the coordinates of the point. We will fill in our standard equation with those values and solve for a, then rewrite. Here's what we have so far:
. Simplifying that will give us -9=a(81)+6. Subtract 6 from both sides and we solve to find that a=-5/27. See, that's how we know it's upside down. Our a value is solved as a negative. Now, put that value of a back in along with the vertex to get a final equation of