maths
For what natural number of x and y the equation 2x+5y7=0 has unique solutions? If the values are taken from collection of real numbers do you think the equation has unique solution
asked by
usha

clearly, x=1 and y=1 is a solution.
It is clearly the only solution, since using any other natural numbers (which are positive integers) produces 2x+5y which is greater than 7.
If you include all real numbers, the graph is a line, and any point on the line is a solution. It happens that the only point with positive integer coefficients is (1,1).posted by Steve
Respond to this Question
Similar Questions

math
The equation 6x7y=5 has a unique solution if x, y are: 1) Real numbers 2) Rational numbers 3) Irrational numbers 4) Natural numbers 
algebra
Which has a Unique solution, No solution, or infinitely many solutions? 1. 2X + 3 = 9 2. 9X+ 2 = 9X+ 2 3. (1/2X+3) = (1/3x+9) 4. (x+2)(x+3) = x*x (x squared) + 5x + 6 5. 2(2x+3) = 4x+6 my guess is 1. unique 2. no 3. unique 4. 
MAths
Consider the following system of inequalities: (c−1)x^2+2cx+c+4≤0  (1) cx^2+2(c+1)x+(c+1)≥0  (2) The sum of all real values of c, such that the system has a unique solution, can be written as a/b, where a 
maths
Consider the following system of inequalities: {(c−1)x^2+2cx+c+4≤0 cx^2+2(c+1)x+(c+1)≥0 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime 
Maths
Find the value(s) of k for which the pair of equations: Equation 1: kx + (k+1)y = 8 Equation 2: 4x + 3ky = 4 (a) no solutions (b) a unique solution (c) infinitely many solutions Can you please use the gradient way and show your 
ALGEBRA CHECK ANSWERS
Solve each equation by graphing the related function. If the equation has no realnumber solution, write no solution. NOTE: when I write + it has a minus on the bottom too x^2+7=0 a. x= +7 b. x = +3.5 c. x= 0 d. no solution *** 
algebra
Consider the following system of inequalities: {(c1)x^2+2cx+c+4<0 { cx^2 + 2(c+1)x+(c+1)>0 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime 
algebra
Consider the following system of inequalities: {(c−1)x^2+2cx+c+4≤0 cx^2+2(c+1)x+(c+1)≥0 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime 
math
can someone correct these for me. 8x –4y = 16 y = 2x –4 My answer: This problem does not have a unique solution. This problem therefore is consistent and dependent These equations are the same. If you solve the first one for 
CountIblis, can i bother you
Countiblis, i know that you might be busy do you mind if i ask you the following for help.Only if you can please. can you explain to me just one more thing so i can undestand it. Now i have an equation which is : 3x = 3x + 5 which