Hello!
Explanation:
Slope-intercept form: → [tex]y=mx+b[/tex]
m: represents the slope and is constant.
b: represents the y-intercept.
You had to used their rise/run.
[tex]\frac{rise}{run}[/tex]
[tex]rise=y^2-y^1[/tex]
[tex]run=x^2-x^1[/tex]
[tex]x^1,y^1=(2,0)[/tex]
[tex]x^2,y^2=(0,-6)[/tex]
[tex]rise=y^2-y^1=-6-0=-6[/tex]
[tex]run=x^2-x^1=0-2=-2[/tex]
[tex]-6/-2=3[/tex]
So, therefore the slope is 3.
Hope this helps!