Answer:
-5
Step-by-step explanation:
[tex]y=-5x[/tex]
The equation given is in slope intercept form.
A slope-intercept equation that passes through the origin would not have the '+ b' part because there is no intercept.
[tex]y=-5x+0[/tex]
When there is no intercept we would not write the '+ 0'.
The slope given is -5.
Hope this helps.