Maths-
General
Easy
Question
Use Substitution to solve each system of equations :
4X + 8Y = -8
X = -2Y + 1
Hint:
find y by substituting x (in terms of y) in the equation and find x by substituting the value of y in the equations .If we get an true statement we say they have infinite solutions .If we get the false statement we say they have no solution.
The correct answer is: They have no solution for the given system of equations.
Ans :-no solution.
Explanation :-
x = - 2y + 1 — eq 1
4x + 8y = - 8 —- eq 2
Step 1 :- find y by substituting x = -2y + 1in eq 2.
4 (-2y + 1) + 8y = - 8 ⇒ - 8y + 8y + 4 = - 8
4 = - 8
Here we get 4 = - 8 which is always false i.e solutions do not exist
They are parallel with each other and have no solutions
They have no solution for the given system of equations.
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