How many pairs of (x,y) satisfy the equations 3x+6y=21 and 4x+8y=16

2 years ago

Share

Answers : (4)

                                        

as 3/4=6/8  so these lines are parallel, i.e. have no common point, so 0 pairs of (x,y) will satisfy this

2 years ago
                                        

3x + 6y = 21


or, x+2y=7


 


4x+8y=16


x+2y=4


 


Inconsistent equations. No solution.

2 years ago
                                        

dear suresh,


these two equations reaemble two parallel lines as a1/a2=b1/b2not equal to c1/c2.


so these two lines never intersect and thus have no solution

one year ago
                                        

no solution since they are parallel lines
please post some tough questions next time
:)

one year ago

Post Your Answer

More Questions On Algebra

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
if a and b are +ve integer such that N=(a+ib) 3 -107i is a +ve integer .Find the value of N. where i 2 = -1
 
 
Ans: Hello Student, Please find answer to your question below Since N is a +ve integer. Then its imaginary part must be zero.
  img
Jitender Singh 2 months ago
1)If all the roots (zeros) of the polynomial f(x)=x^5+ax^4+bx^3+cx^2+dx-420 are integers larger than 1, then f(4)=? 2)Consider the two functions f(x) =x^2+2bx+1 and g(x)=2a(x+b), where the...
 
 
Hello student, Please find the answer to your question below f must have 5 (not necessarily distinct) roots d1, d2, . . . d5. f factors as (x – d1)(x – d2)(x – d3)(x...
  img
SHAIK AASIF AHAMED one month ago
[ r1 – r ]/a + [r2 – r]/b =?
 
 
Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 2 months ago
please explain fully …...if it is 0/0 form than tell why ….…..please
 
 
Ans: If the given function in the limit is of zero by zero form, then we can apply L’Hospital rule which is explain below f(a) = 0 g(a) = 0 Similarly follow for higher derivative. We...
  img
Jitender Singh 2 months ago
 
jitendra sir my question is not ..to explain l hospital rule ….….my question is that the image that i attach have 0/0 form …. how it have 0/0 form.....................jo maine question...
 
milind 2 months ago
In a triangle a^2+b^2+c^2-ac-sqrt3*ab=0 then the triangle is
 
 
Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 2 months ago
 
Great method
 
Leo Pixie 2 months ago
solve for x cos x +cos y +cos(x+y) = -3/2 please explain step by step as i am a begineer .please try to answer asap?
 
 
Ans: Your question seems to be incomplete. What is y. Is it variable or constant? If it is variable, then you need to specify the relation b/w x & y. After that, you can simply open the...
  img
Jitender Singh 2 months ago
 
sir y is a variable and we need to solve it not only for x but for y also please help?
 
rashmi 2 months ago
View all Questions »