Mathematics
15 Online
OpenStudy (darkbluechocobo):
f(x) = 2x^2 + 8x + 7
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (darkbluechocobo):
@ganeshie8 would the vertex form of this be 2(x+2)^2 - 1
ganeshie8 (ganeshie8):
Looks good!!
OpenStudy (darkbluechocobo):
yay :D do you mind if i keep asking you questions aha :p you have answered so many
ganeshie8 (ganeshie8):
sure, as long as you're learning, which you're :)
OpenStudy (darkbluechocobo):
So the next one is 2x^2 + 3x − 4
Join the QuestionCove community and study together with friends!
Sign Up
ganeshie8 (ganeshie8):
Look at first two terms
OpenStudy (darkbluechocobo):
SO would the vertex form of this be 2(x+3/4)^2-41/8
OpenStudy (darkbluechocobo):
what about the first 2?
ganeshie8 (ganeshie8):
You're right! may i kniw how you worked it so fast ? :)
OpenStudy (darkbluechocobo):
Well i have been working on this quite a while before i ask i just basically double check here xD
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (darkbluechocobo):
i have been doing these problems for about an hour or so
OpenStudy (darkbluechocobo):
So this one I know the vertex is (-1,-4). But I don't know how to find the axis of symetry
OpenStudy (darkbluechocobo):
f(x) = x^2 + 2x − 3
ganeshie8 (ganeshie8):
if vertex is (a, b)
axis of symmetry would be : x = a
OpenStudy (darkbluechocobo):
so -1
Join the QuestionCove community and study together with friends!
Sign Up
ganeshie8 (ganeshie8):
axis of symmetry is a vertical line through vertex
ganeshie8 (ganeshie8):
-1 is a number, not an equation :/
OpenStudy (darkbluechocobo):
ohhhh so like|dw:1411428258787:dw|