Do you remember what we did last time, first tell me,w hat's the vertex coordinate point
jnlkmnjkm:
4, 1
snowflake0531:
Yes and we have \[a(x-h)^2 +k\] where (4,1) is (h,k)
can you plug h and k in? what do you get?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
jnlkmnjkm:
a(x-4)^2+1
snowflake0531:
Yes so we have \[y=a(x-4)^2 +1\]
We now have to solve for x
tell me a random coordinate point on the parabola that isn't the vertex
jnlkmnjkm:
2,3
jnlkmnjkm:
!@snowflake0531
snowflake0531:
I htink you meant (3,2)
\[2 = a(3-4)^2 +1\]
solve for a
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
jnlkmnjkm:
a(-1)^2+1
jnlkmnjkm:
1+1
jnlkmnjkm:
2 = 2
snowflake0531:
So, a=1
jnlkmnjkm:
a = 2?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
snowflake0531:
no
a=1
1= a(-1)^2
1 = a(1)
a=1
or something like that
anyways a=1
snowflake0531:
So we have \[(x-4)^2 +1\] since we have to convert this to standard form, can you do (x-4)^2
remember that\[(a-b)^2 =a^2-2ab+b^2\]
Florisalreadytaken:
\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
no
a=1
1= a(-1)^2
1 = a(1)
a=1
or something like that
anyways a=1
\(\color{#0cbb34}{\text{End of Quote}}\)
do you realise what you just wrote?
snowflake0531:
no
Florisalreadytaken:
fair nuff
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
jnlkmnjkm:
is she correct
Florisalreadytaken:
positive
snowflake0531:
e.e i'm correct, i just said no bc floris was questioning me
snowflake0531:
so what is \[(x-4)^2+1\]
jnlkmnjkm:
x^2-8x+17
Still Need Help?
Join the QuestionCove community and study together with friends!