Answer:
[tex]f=-8[/tex]
Step-by-step explanation:
Slope forma is [tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]
So we fill in what we know
[tex]\frac{10-f}{2-(-1)} =6[/tex]
[tex]\frac{10-f}{3} =6[/tex]
Multiply 3 on both sides
[tex]10-f=18[/tex]
Subtract 10 on both sides
[tex]-f=8[/tex]
Divide both sides by -1
[tex]f=-8[/tex]
I hope this helps
