Answer
a. yes
b. no
Work Step by Step
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. $-4+5\times0=-4<=>-4=-4$
$-2\times-4=10\times0+8<=>8=8$
b.$6\times5\times-2=-4<=>28\ne-4$
