Question

CAN I GET ANY HELP FOR MY HOMEWORK PROBLEMS? :( Solve the system of equations by using the substitution method. //tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Bx%2By%3D20%7D%20%5Catop%20%7By%3D-5x%7D%7D%20%5Cright." id="TexFormula1" title="\left \{ {{x+y=20} \atop {y=-5x}} \right." alt="\left \{ {{x+y=20} \atop {y=-5x}} \right." align="absmiddle" class="latex-formula"> Are there solutions, none, or infinite numbers? If there's one solution, what's the ordered pair?

Answer 1

Answer:

One solution. (x,y) = (-5,25)

Step-by-step explanation:

y = -5x

x + y = 20

x + (-5x) = 20

-4x = 20

x = -5

y = -5 (-5)

y = 25