Question

v

Answer 1

graph them and look where they intersect
that is the solutiom

Answer 2

and how do I do that?

Answer 3

you can use a graphing calculator as i did at many online
here is the one i used
https://www.desmos.com/calculator
or

you can do it the old fashioned way

take for example the first equation and rearrange it y=mx+b format
x + 4y = -16
-x-16=4y divide both sides by 4
y= -1/4x - 4

then choose values for x (2,1,0,-1,-2) and plug them in and see what you get for y
example
if x is 0 then y is -4

that should give you a good start on a line when

graph the line, do the same for the other equation where they intersect is your
solution. you can check by solving the system of eqaution by substitution or elimination.