Hi Jeremiah H
First of all please let me know if this is your question
y = 0.25x - 7
If that is the question do you want to know if it passes through (-6, 8)
If (-6, 8) is a point on the line you just plug in the x value to see if it results in the y value
y = 0.25(-6) - 7
y = -1.5 - 7
y = -8.5
So it looks the line does not pass through the point (-6, 8)
You can also just graph the line to see if (-6, 8) is a point on the line.
I hope you find this useful please let me know if I've interpreted your question correctly.