Answer:
[tex]4[/tex]
Step-by-step explanation:
First we are going to find the slope for [tex]l_{1}[/tex].
We are going to use the letter 'm' for slope.
[tex]m=\frac{y_{2_{} } -y_{1} }{x_{2} -x_{1} }[/tex]
[tex]m= \frac{5-1}{-2-(-3)}[/tex]
[tex]m=\frac{4}{1}[/tex]
[tex]m=4[/tex]
Now, since [tex]l_{1}[/tex] and [tex]l_{2}[/tex] are parallel, their slopes should be the same.
Since the slope for [tex]l_{1}[/tex] is 4, the slope for [tex]l_{2}[/tex] must also be 4.
