Systems of Linear Equations

Question

This one is stumping me..I do not see how the ordered pair satifies both equations yet the book says it does.

Order pair is (0,2)

First equation: 3x-4y=8  3(0) -4(2) is -8 -8 doesnt equal 8

Second equation: 2y=2/3x-4  2(2) =2/3(0) -4 again 4 doesnt equal -4...

I was sailing along with the other ones that were similar..but this has me stumped unless the book is incorrect

Answer 1

The book IS incorrect! (It happens; they call them typographical errors and periodically publish an errata that identifies and corrects them. Your teacher would have to ask the publisher for it.)

 

I suspect that the point should be (0,–2). Then:

 

3(0) – 4(–2) = 8

 

2(–2) = (2/3)(0) – 4