Maths-
General
Easy
Question
Solve the following by using the method of substitution
Y = - 2X-3
Y = - X-4
Hint:
find x by substituting y (in terms of x) in the equation and find y by substituting value of x in the equations .
The correct answer is: x = 1 and y = - 5
Ans :- x = 1 ; y = -5
Explanation :-
⇒ y = -2x - 3 — eq 1
⇒ y = -x - 4—- eq 2
Step 1 :- find x by substituting y = 4x + 2 in eq 2.
-2x - 3 = -x – 4 ⇒ 2x + 3x + 4
⇒ 2x – x = 4 - 3 ⇒ x = 4 - 3
⇒ x = 1
Step 2 :- substitute value of x and find y
⇒ y = - x – 4 ⇒ y = -1 - 4
∴ y = - 5
∴ x = 1 and y = - 5 is the solution of the given pair of equations.
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