The given expression is
[tex]y=6x-15[/tex]We need to find y-coordinates for, x=8, x=-1, and x=5.
Let's replace each case to get each y-coordinate.
For x=8
[tex]y=6(8)-15=48-15=33[/tex]For x=-1
[tex]y=6(-1)-15=-6-15=-21[/tex]For x=5
[tex]y=6(5)-15=30-15=15[/tex]Therefore, the complete ordered pairs are
[tex](8,33),(-1,-21),(5,15)[/tex]