Question 385523
  <pre><font size = 3 color = "indigo"><b>
Hi
solving the system by Substitution
y -2x = 0  Or   y = 2x
x^2 + y^2 = 5
x^2 + (2x)^2 = 5
x^2 + 4x^2 = 5
   5x^2 = 5
    x^2 = 1
     x = ± 1
     y = ± 2