SOLUTION: Solve the system by graphing.
4x + 2y = 10
y = 4
Algebra.Com
Question 90781: Solve the system by graphing.
4x + 2y = 10
y = 4
Answer by praseenakos@yahoo.com(507) (Show Source): You can put this solution on YOUR website!
Question:
Solve the system by graphing.
4x + 2y = 10
y = 4
Answer:
If you are doing it in a graph paper, what you have to do is,
Rewrite the given equations in terms of x as follows.
4x + 2y = 10
==> y = 5 - 2x
y = 4
Now put some arbitrary values for x in the (1) and (2) and find out the corresponding y values.
For(1), when x = 0, y = 5 - 2*0 = 5
when x = 1, y = 5 - 2*1 = 5 - 2 = 3
When x = 2, y = 5 - 2*2 = 5 - 4 = 1
Now plot this values on the graph paper.
Similarly find out x and y values for the second equation and plot the graph.
Then the graphs will come like this....
Here you can see that the lines intersect at a single point.
Coordinates of that point of intersection is (0.5,4) which is the solution of the given equations.
To check your solution, substitute the values, x = 0.5 and y = 4 in the given equations....then you can see that these values will satisfy the given equation.
Hope you found the explanation useful.
Regards.
Praseena.
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