Oops! It appears that you have disabled your Javascript. In order for you to see this page as it is meant to appear, we ask that you please re-enable your Javascript!

**Q.1Â Â Â Â Â Â The cost of a notebook is twice the cost of a pen. WriteÂ a linear equation in twoÂ variables to represent this statement.**

**Sol.Â **

Let the cost of notebook beÂ Rs x and that of a penÂ be Rs y.

SinceÂ the cost of a notebook is twiceÂ the costÂ of pen. So, theÂ required linear equation in two

variables to representÂ the aboveÂ statement is given by

x = 2y.

x â€“ 2y = 0

**Q.2Â Â Â Â Â Â Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each** **case :**

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â **(i)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (ii) **

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

Â Â Â Â Â Â Â Â Â Â Â Â (iv) x = 3y

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

Â Â Â Â Â Â Â Â Â Â Â Â (vi) 3x + 2 = 0

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

Â Â Â Â Â Â Â (viii)Â 5 = 2x

(i) Â can be written as

On comparingÂ it with ax + by + c = 0 , we have

a = 2, b = 3 andÂ

(ii)Â On comparingÂ Â withÂ axÂ + by + c = 0, we have,

(iii)Â â€“2x + 3y = 6 can beÂ written as â€“ 2x + 3y â€“ 6 = 0

OnÂ comparingÂ it withÂ ax + by + c = 0 , we have

a = â€“ 2, b = 3 and c = â€“ 6

(iv)Â x = 3y canÂ be writtenÂ as x â€“ 3y = 0

OnÂ comparingÂ it withÂ ax + by + c = 0 , we have

a = 1, b = â€“ 3 and c = 0

(v)Â 2x = â€“ 5y can be writtenÂ asÂ 2x + 5y = 0

OnÂ comparingÂ it withÂ ax + by + c = 0 , we have

a = 2, b = 5 and c = 0

(vi)Â OnÂ comparingÂ 3x + 2 = 0 withÂ ax + by + c = 0 , weÂ have

a = 3, b = 0 and c = 2

(vii) OnÂ comparingÂ y â€“ 2 = 0 withÂ ax + by + c = 0,Â weÂ have

a = 0 , b = 1 and c = â€“ 2.

(viii)Â 5 = 2x can be writtenÂ as 2x â€“ 5 = 0

OnÂ comparingÂ withÂ ax + by + c = 0 , we have

a = 2, b = 0Â and c = â€“5.

orÂ Â Â â€“ 2x + 5 = 0 , we haveÂ a = â€“ 2, b = 0 , cÂ = 5

Contact Us

it is very good but we can understan proparly

It's very helpful for me because I used this website several times to complete my homework. I cheated all the sums from this without using my brain.

nice thing

Very nice .It is very halpfull to us

Very nice and awesome

Very good and awesome

Superbb

soo good

Really good

Helpfull

Awesome

It is so helpful to me

very very thanksssssssssssss..............

Very nice website l have understand all the maths

Helpful website

Message *our maths teacher did not teach us properly this website help me a lot

It's very helpful for students Studies. And It is easy to do the homework. Very beautiful website thankyou so much.

Verey easy sum thank you

Yeah it's so helpful for us.....

I mean students for study...

Very nice.

it is very helpfull.

Very nice website . I recommend this to all for studies

Helpfull