How do you substitute to determine if the ordered pair (3, 2) is a solution of the system of equations y=-x+5 and x-2y=-4?
3 Answers
Explanation:
You substitute the new thing for the old thing,
and you replace the old thing with or by the new thing.
Substitute 3 for x and 2 for y, and check if both equations are correct?
Is
Is
Is this true
(3,2) lies on one the line but not both, and it is not the not a solution of the system of equations.
See Below.
Explanation:
In an ordered pair
variable and the second term is the value for the second variable in
a system of simultaneous equations.
So, Here, We have,
And, The Equations:
Let's substitute
For (i):
For (ii):
So, The ordered pair
Hope this helps.
The solution is
Explanation:
Since Equation 1 is already solved for
Expand.
Simplify.
Add
Simplify.
Divide both sides by
Now substitute
The solution is
graph{(y+x-5)(x-2y+4)=0 [-10, 10, -5, 5]}