Answer:
[tex]m=-1[/tex]
Step-by-step explanation:
Basically, the equation is written in a slope-intercept form which is
[tex]y=mx+b[/tex]
So we know that any variable that by its self always has a 1 in front of it
Meaning that the equation written with 1 would look like
[tex]y=-1x+4[/tex]
