\(y = x^{2} + 3x - 4\)
\(x^{2} + 3x - 4 = 0\)
\(x = \frac{-(3) +/- \sqrt{(3)^{2} - 4(1)(-4)}}{2(1)}\)
\(x = \frac{-3 +/- \sqrt{9 + 16}}{2}\)
\(x = \frac{-3 +/- \sqrt{25}}{2}\)
\(x = \frac{-3 +/- 5}{2}\)
\(x = \frac{3 + 5}{2}\) \(x = \frac{3 - 5}{2}\)
\(x = \frac{8}{2}\) \(x = \frac{-2}{2}\)
\(x = 4\) \(x = -1\)
\(y = x^{2} + 3x - 4\)
\(y = (4)^{2} + 3(4) - 4\)
\(y = 16 + 12 - 4\)
\(y = 28 - 4\)
\(y = 24\)
\((x, y) = (4, 24)\)
or
\(y = x^{2} + 3x - 4\)
\(y = (-1)^{2} + 3(-1) - 4\)
\(y = 1 - 3 - 4\)
\(y = -2 - 4\)
\(y = -6\)
\((x, y) = (-1, -6)\)
