Real Numbers

$\frac{5}{3}$ (correct)

$\frac{2}{5}$

$\frac{3}{5}$

$\frac{2}{3}$

$x^2 + y^2 = 25$

$3x^2 + 4xy - 2y^2 = 0$

$\frac{x}{2} + \frac{y}{3} = 1$

$2x - 3y = 5$ (correct)

$h(x) = 3x^2 - 5x + 2$ (correct)

$f(x) = \frac{1}{x}$

$k(x) = |x|$

$g(x) = \sqrt{x}$