#1
Slope=
[tex]\\ \rm\Rrightarrow m=4-2/2-1=2[/tex]
Equation in point slope form
[tex]\\ \rm\Rrightarrow y-2=2(x-1)[/tex]
[tex]\\ \rm\Rrightarrow y-2=2x-2[/tex]
[tex]\\ \rm\Rrightarrow y=2x[/tex]
Graph attached
#2
Same like before
Equation of the line:-
[tex]\\ \rm\Rrightarrow y=3x[/tex]
Graph attached
