Question

Step-by-Step Solutions begin on pag
phing.
2. y=x² - 4
y = -3​

Answer 1

The solution is (1, -3) or (-1, -3)

Solution:

Given that,

$y = x^2 - 4 ------- eqn\ 1\\\\y = -3 ---------- eqn\ 2$

We have to find the solution (x, y)

Substitute eqn 2 in eqn 1

$-3 = x^2 - 4$

$x^2 = -3 + 4\\\\x^2 = 1\\\\Take\ square\ root\ on\ both\ sides\\\\x = \pm 1$

Thus, we get,

x = 1

x = -1

Thus the solution is (1, -3) or (-1, -3)