Question

Solve for y
Y^2/4=9
y^2+x=49
y^2-x^2=0

Answer 1

\[\frac{ y^2 }{ 4 }=9\]

Answer 2

we want to isolate the y so lets multiply both sides of the equation by 4 to get rid of the fraction

Answer 3

so now we have \[y^2=36\] , now just take the square root of both sides so we have \[y=\sqrt{36}\]

Answer 4

when you have a square root its + or - so for this answer it would be \[y=\pm6\]

Answer 5

hey taht works thanks can you explain other problems too that would be great

Answer 6

or atleast tell me what to do when theres X and have to solve for y?

Answer 7

i mean do i just cut it off the equation?

Answer 8

\[y^2+x=49\]

Answer 9

if you need to solve for y on this one then set the equation to \[y^2=-x+49\]

Answer 10

then we would need to take the square root of both sides

Answer 11

what did u get

Answer 12

y=? +7

Answer 13

dunno what to do with x

Answer 14

the answer will be left in square root form on this one so it will be \[y=\pm \sqrt{-x+49}\]

Answer 15

there was no value given for x so we just have to leave it as x

Answer 16

hmm that makes sense let me do the last problem and tell me if i was right

Answer 17

wait there can be - in square root?

Answer 18

ya but we dont know the value of x, what if it was 3

Answer 19

so the answer for last wuestion will be y= square root of x^2

Answer 20

or y=x?

Answer 21

it would be \[y=\pm x\]

Answer 22

when you take the square root of something you have to include the +or-

Answer 23

alright thanks bro :) now my omework is done i really appreciate it

Answer 24

np