Question 46614
2x + y = 1
also means:
y = -2x + 1
plug:
x^2 + y = 4
x^2 - 2x + 1 = 4
x^2 - 2x - 3 = 0
(x - 3)(x + 1) = 0
x = 3 and x = -1
plug:
y = -2x + 1
y = -2(3) + 1 = -5 so (3,-5)
y = -2x + 1
y = -2(-1) + 1 = 3 (-1,3)
{{{graph(600,600,-10,10,-10,10,-2x + 1,-x^2 + 4)}}}