Question

1) Find an equation of the line that passes through thr pair of points (-5,-9) and (2,-7).

Answer 1

1: Assuming this line is linear, the first thing to do is find the slope. 
The slope formula is $m=\frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }$, so in this case, it is $m=\frac{ (-7) - (-9) }{ 2 - (-5) }$, which comes to $\frac{2}{7}$. Then, use your slope and one of the points given to write the point-slope formula of the linear equation, and then written in standard form:
y=$\frac{2}{7}$x-$\frac{53}{7}$.

2. Use the same process as in question 1 to find:
y=-7x+11