y = 4 x - 9 y = 19 What is the solution x , y to the given system

Question

y = 4 x - 9 y = 19 What is the solution x , y to the given system of equations?

Accepted Answer

Choice B is correct. It's given by the second equation in the system that y = 19 . Substituting 19 for y in the first equation yields 19 = 4 x - 9 . Adding 9 to both sides of this equation yields 28 = 4 x . Dividing both sides of this equation by 4 yields 7 = x . Therefore, since x = 7 and y = 19 , the solution x , y to the given system of equations is 7 , 19 . Choice A is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.

Question y-4-x-