Hello there, I hope you are having a marvellous day. :)
y=-8x+6 is written in slope-intercept form (y=mx+b)
m is the slope, while b is the y-intercept.
For this line, -8 is the slope, and 6 is the y-intercept.
Hope it helps. Ask me if you have any queries.
~An emotional teen who helps others with joy

Good luck.