Solve the system of equations by graphing.
y=- 4x - 5
Ty=x+5
Use the graphing tool to graph the system

The given system of equations is and

We need to determine the solution to the system of equations.

Plotting the equation :

The equation   can be plotted in the graph using the x and y intercepts.

When , the equation becomes

When , the equation becomes

Hence, joining these coordinates (0,-5) and (-1.25, 0), we get the line for the equation  

Plotting the equation :

The equation can be plotted in the graph using the x and y intercepts.

When , the equation becomes

When , the equation becomes

Hence, joining these coordinates (0,5) and (-5,0), we get the line for the equation  

Solution of the system of equations:

The solution of the system of equations is the point of intersection of these two lines.

Thus, from the graph, the lines intersect at the point (-2,3)

Hence, the solution to the system of equations is (-2,3)

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.