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So we have a statement that 3x + y = 7x = 2y. Can we find some values for x and y that will satisfy the statement?
Suppose the statement is true, then we have
3x + y = 7x, which yields y = 4x. or
3x + y = 2y, which yields y = 3x.
Thus, 4x = 3x, if and only if x = 0, which also yields y = 0.
Therefore, the given statement is true only for x = 0 and y = 0. For other values of x and y, it is a false statement.
If there are two equations such as 3x + y = 7 and x = 2y, then substitute 2y for x into the first equation.
3(2y) + y = 7
6y + y = 7
7y = 7
y = 1, thus x = 2y = 2(1) = 2.
Therefore the solution point is (2, 1),
What else can I help you with?
How do you solve 2x plus y equals 0 and 4x plus 2y equals 0?
many solutions
What is the answer to this problem 5x plus 2y equals 19 and x-2y equals -1?
x = 3 and y = 2
How many solutions does the linear system -8x plus 2y equals 6 and -4x plus y equals 3 have?
Two solutions and they are:- x = 0 and y = 3
How many solutions does x plus y equals 4 and 2x plus 2y equals 8 have?
Infinite, both equations are equivalent and all possible solutions can be represented on the graph y = 4 - x
Is 3x plus 2y equals 7 and -4x-3y equals 10 dependent?
Yes and their solutions are x = 41 and y = -58
How do you solve 2x plus y equals 0 and 4x plus 2y equals 0?
many solutions
How many solutions does 2x plus y equals 5 and 2y plus x equals 4 have?
1 solution
What are the solutions to the simultaneous equation of 3x plus 2y equals 5x plus 2y equals 14 showing work?
If: 3x+2y = 5x+2y = 14 Then: 3x+2y = 14 and 5x+2y =14 Subtract the 1st equation from the 2nd equation: 2x = 0 Therefore by substitution the solutions are: x = 0 and y = 7
What is the answer to this problem 5x plus 2y equals 19 and x-2y equals -1?
x = 3 and y = 2
How many solutions does the linear system -8x plus 2y equals 6 and -4x plus y equals 3 have?
Two solutions and they are:- x = 0 and y = 3
X plus 52 plus 2y plus 35 equals 3 solve?
x + 52 + 2y + 35 = 3 x + 2y = 3 - 52 -35 x + 2y = -84 Infinite number of solutions, are you sure you posted the correct equation?
How many solutions does x plus y equals 4 and 2x plus 2y equals 8 have?
Infinite, both equations are equivalent and all possible solutions can be represented on the graph y = 4 - x
Is 3x plus 2y equals 7 and -4x-3y equals 10 dependent?
Yes and their solutions are x = 41 and y = -58
How do you resolve this problem -4x-2y equals plus 3?
-4x-2y = 3 -2y = 4x+3 y = -2x-1.5 which is the equation of a straight line
What Is 2y plus 4a equals?
x-2y+bz=3 ax+2z=2 5x+2y=1 find values of a and b for which the system of linear equation has infinitely many solutions
X equals 2y-3 x equals 2y plus 4?
This means that 2y - 3 = 2y + 4 which is not possible.
2y-3 equals y plus 2?
No 2y-3 is not equals y plus 2AND how old are u?
