Use substitution to solve the linear system of equations x = 4. -y = 1/2x (4, -2) (-2, 4) (4, 2) (2, -4)
Mathematics · College · Thu Feb 04 2021
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Given the equation:
x = 4
-y = ½x
Solve for the system of linear equation.
Solution:
In order to solve for the system of linear equation, we simply need to substitute the value of x in the equation of y.
-y = ½x
-y = ½(4)
-y = 2
Multiply the negative sign on both sides of the equation in order to cancel out -y
(-)(-y) = (-)(2)
y = -2
Final answer:
( 4 , -2 )