Question

find the equation of straight line joining the point of intersection x^2+y^2=1 and y2=4x is given by

Answer 1

is that 2y or y^2 = 4x?

Answer 2

solve them simultaneously

plug in y^2 =4x in
x^2+y^2 =1

you'll get a quadratic in 'x'

Answer 3

its y^2=4x @williamnz

Answer 4

@hartnn but the options of answer are
x=2
x=-2
y=-2
y=2

Answer 5

i have done in the way u told me so @hartnn the answer is x=2 right?

Answer 6

thats because you still need to solve that quadratic!

x^2+4x =1

how did you get x=2 ?? can you show me your steps ?

Answer 7

can you please verify your question ?
it does not seem the correct answer is in the options

Answer 8

i put the value of y^2+4x in equation 1 then apply the quadratic formula and i get two answers x=2 and x=-6

Answer 9

yeh it is

Answer 10

this ?
\(x^2+y^2 =1 \\ y^2 =4x\)
?

Answer 11

yes

Answer 12

y^2=4x
x^2+y^2=12
then x^2+4x-12+0
applying quadratic equation i get two answer i ignore the minus value and put my answer as x=2

Answer 13

oh it is 12 and not 1

Answer 14

then yes
x=2 is correct :)

Answer 15

thanku @hartnn

Answer 16

welcome ^_^

Answer 17

:)

Answer 18

which website is best for preparing apptitude test?? @hartnn

Answer 19

which of the following line is parallel to line 3x-12y=12
x-4y=-1
x+4y=-1
-x-4y=-1
3x+12y=0

Answer 20

find the slope of
3x-12y =12

Answer 21

then?
the slope is 1/4

Answer 22

right
now
"Parallel lines have same slope!"

so check which line from your choices have slope =1/4

Answer 23

ok according to you which option is correct?

Answer 24

can you find the slope of
x-4y=-1
?

Answer 25

yeh its 1/4 :)

Answer 26

then thats your answer :)

Answer 27

hmmm thanks;)

Answer 28

welcome ;)

Answer 29

y varies directly as cube of x. when x=0.5, y=2.5. if y=540 then x=

Answer 30

cube of x : \(x^3 \)

y varies directly as cube of x
\(y = kx^3 \)

from x= 0.5, y= 2.5
find the value of k

Answer 31

k=20x^3
and the answer must be x=3?

Answer 32

y = 20x^3
and yes
x=3 is correct :)

Answer 33

mean i did it rightly but then i thought my answer is wrong so i post it:P

Answer 34

its always good to verify :)

Answer 35

hmm:) gonna ask some more questions

Answer 36

sure, go ahead :)
just a tip : make a new post for each question!

Answer 37

oh ok:)