Chapter 4 - Section 4.1 - Solving Systems of Linear Equations by Graphing - Exercise Set - Page 289: 5

a. yes b. no

To find out if an ordered pair is a solution you need to insert the values of the variables into the equation. If the answer of the system is true, the pair is a solution, if not it isn't. a. $2\times-3=4\times-3+6<=>-6=-6$ $2\times-3--3=-3<=>-3=-3$ b. $2\times0=4\times3+6<=>0\ne18$