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anonymous
 one year ago
find the axis of symmetry for y=3x^2+5x7
a)x=5
b)x=5/3
c)x=7
d)x=5/6
anonymous
 one year ago
find the axis of symmetry for y=3x^2+5x7 a)x=5 b)x=5/3 c)x=7 d)x=5/6

This Question is Closed

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1What is the x coordinate of the vertex?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it dosnt give me one

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1sure, you have to find it out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0huh im so sorry im wakeful at this lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[y =3x^2+5x 7\] do you know how to do the completing the square? Look at the attachment, it briefly shows you how to do it. So If I complete the square given in the question then it will be \[y = 3(x + \frac{ 5 }{ 3 })^2\frac{ 25 }{ 9 }  7\] the x you see in this equation has to be to which if you add 5/3 will give you 0 Sp bring 5/3 to the other side \[x = \frac{ 5 }{ 3 }\] back to the original equation so when x is 5/3 your y will be: \[y = \frac{ 88 }{ 9 }\] the x is the line of symmetry dw:1433012607952:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I didn't check the discriminant so Idk if the parabola is having any xintercept btw what @Loser66 said is correct I simply gave you the explanation for the formula

Loser66
 one year ago
Best ResponseYou've already chosen the best response.1@nopen x = b/2a =  5/6
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