what does it mean by "determine the equation of a line that passes through the given point. First find the slope" someone please help and give answer ASAP

Answer:
y=-3x-1
Step-by-step explanation:
The mistake that was made was in the denominator of the work. The second 2 should be the -1. This is what you should get:
[tex]\frac{-7-2}{2-(-1)}[/tex]
[tex]\frac{-9}{3} =-3[/tex]
Hope that clear things up.