Question 741026
We are given the following:

Tell whether the ordered pair is a solution of the linear system.
(4,2); 
y=-5x+22 
y= 8x -30 

The ordered pair (4,2) corresponds to x=4, y=2

substitute x=4 in the first equation and we get

y=-5*4+22  and y=-20+22=2

substitute x=4 in the second equation and we get

y=8*4-30=32-30=2

therefore the ordered pair (4,2) is a solution for the two equations, a linear system