y = - 3 x 4 x + y = 15 The solution to the given system of equations is

Question

y = - 3 x 4 x + y = 15 The solution to the given system of equations is x , y . What is the value of x ?

Accepted Answer

Choice C is correct. The given system of linear equations can be solved by the substitution method. Substituting - 3 x for y from the first equation in the given system into the second equation yields 4 x + - 3 x = 15 , or x = 15 . Choice A is incorrect and may result from conceptual or calculation errors. Choice B is incorrect and may result from conceptual or calculation errors. Choice D is incorrect. This is the absolute value of y , not the value of x .

Question y-3-x-