GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
There is no solution to the system of equations 4y + 2 x = 7 and 2y =
[#permalink]
10 Dec 2021, 06:06
10 Dec 2021, 06:06
Expert Reply
2
Bookmarks
00:00
Question Stats:
75% (01:36) correct
25% (02:04) wrong based on 4 sessions
Hide Show timer Statistics
There is no solution to the system of equations 4y + 2x = 7 and 2y = 5 + ax. Find the value of a.
A) –2
B) –1
C) 0
D) 1
E) 2
A) –2
B) –1
C) 0
D) 1
E) 2
Re: There is no solution to the system of equations 4y + 2 x = 7 and 2y =
[#permalink]
10 Dec 2021, 19:27
10 Dec 2021, 19:27
\(4y + 2 x = 7\) & \(2y = 5 + ax\)
If there is no solution, then the coordinates of \(x\) & \(y\) are in same multiplication.
\(2y = 5 + ax\)
\(2y - ax = 5\)
Multiply both sides by \(2\)
\(4y - 2ax = 10\)
Compare with \(4y + 2x = 7\)
\(-2ax = 2x\)
\(a = -1\)
Answer B
If there is no solution, then the coordinates of \(x\) & \(y\) are in same multiplication.
\(2y = 5 + ax\)
\(2y - ax = 5\)
Multiply both sides by \(2\)
\(4y - 2ax = 10\)
Compare with \(4y + 2x = 7\)
\(-2ax = 2x\)
\(a = -1\)
Answer B
gmatclubot
Re: There is no solution to the system of equations 4y + 2 x = 7 and 2y = [#permalink]
10 Dec 2021, 19:27
Moderators:
