Findthevalueofkforwhichthesystemofequationskx y 2 & 6x 2y 3hasauniquesolution


Question 636409: Graph linear equation
x-y=2
Thanks
Answer by KMST[5315]

 
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You can put this solution on YOUR website!
The graph of a linear equation is a straight line.
To locate that straight line you just need two points.
To find a point, you give a value to one of the variables [x or y],
and solve the equation to find the corresponding value for the other variable.
You can chose any value, for any variable, but a smart choice makes the calculations and the graphing easy.
For values, zero is often a good choice.
For

, the equation is
-->
-->

That gives you the point [0,-2].
For
, the equation is
-->

That gives you the point [2,0].
Plotting those two points, and connecting them with a line gives you the graph.


What will be the value of c if solution of equations cx y 2 and 6x 2y 3 are infinite?

Each point on the lines will be a solution and so the pair of equations will have infinitely many solutions. We observe that the value of c is not constant. Therefore, there is no value of c for which the given equations will have infinitely many solutions.

What is the solution of the equations xy 2 and x y 4?

The solution of equations x-y=2 and x+y=4 is:- If x=a and y= b is solution for the pair of equations x-y=2 and x+y=4, then find the values of a and b. If x = a and y = b is the solution of the pair of equations `x-y=2" and "x+y=4`, find the values of a and b.

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