Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^2 y^2 + x = y$$
    $\dfrac{2xy^2 + 1}{1 - 2x^2 y}$
    Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^3 + 3x^2 y + y^3 = 5$$
      $-\dfrac{x^2 + 2xy}{x^2 + y^2}$
      Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$(x + y)^3 = x^2$$
        $\dfrac{2x - 3(x+y)^2}{3(x+y)^2}$
        Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^2 - 3xy + 2y^2 = 4$$
          $\dfrac{3y - 2x}{4y - 3x}$
          Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$xy^2 - x^2 y = 2$$
            $\dfrac{2xy - y^2}{2xy - x^2}$
            Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$\sqrt{x} + \sqrt{y} = 4$$
              $-\sqrt{\dfrac{y}{x}}$
              Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$y^3 - 3xy = 2$$
                $\dfrac{y}{y^2 - x}$
                Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^3 + y^3 = 9xy$$
                  $\dfrac{3y - x^2}{y^2 - 3x}$
                  Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^2 y + xy^2 = 6$$
                    $-\dfrac{2xy + y^2}{x^2 + 2xy}$
                    Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^3 - xy + y^3 = 0$$
                      $\dfrac{y - 3x^2}{3y^2 - x}$
                      Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$y = (x + y)^3$$
                        $\dfrac{3(x+y)^2}{1 - 3(x+y)^2}$
                        Find $\dfrac{\mathrm{d}y}{\mathrm{d}x}$ given that $$x^2 + 2xy - y^2 = 4$$
                          $\dfrac{x+y}{y-x}$
                          Find the coordinates of the points on the curve $$x^2 + y^2 = 25$$ where the tangent is parallel to the $x$-axis.
                            $(0, 5)$ and $(0, -5)$
                            Find the coordinates of the points on the curve $$x^2 + y^2 = 25$$ where the tangent is parallel to the $y$-axis.
                              $(5, 0)$ and $(-5, 0)$
                              Find the coordinates of the points on the curve $$4x^2 + 9y^2 = 36$$ where the tangent is parallel to the $x$-axis.
                                $(0, 2)$ and $(0, -2)$
                                Find the coordinates of the points on the curve $$4x^2 + 9y^2 = 36$$ where the tangent is parallel to the $y$-axis.
                                  $(3, 0)$ and $(-3, 0)$
                                  Find the coordinates of the points on the curve $$x^2 + xy + y^2 = 12$$ where the tangent is parallel to the $x$-axis.
                                    $(2, -4)$ and $(-2, 4)$
                                    Find the coordinates of the points on the curve $$x^2 + xy + y^2 = 12$$ where the tangent is parallel to the $y$-axis.
                                      $(-4, 2)$ and $(4, -2)$
                                      Find the coordinates of the points on the curve $$x^2 - xy + y^2 = 3$$ where the tangent is parallel to the $x$-axis.
                                        $(1, 2)$ and $(-1, -2)$
                                        Find the coordinates of the points on the curve $$x^2 - xy + y^2 = 3$$ where the normal is parallel to the $x$-axis.
                                          $(2, 1)$ and $(-2, -1)$
                                          Find the coordinates of the points on the curve $$x^2 + y^2 = 36$$ where the normal is parallel to the $y$-axis.
                                            $(0, 6)$ and $(0, -6)$
                                            Find the coordinates of the points on the curve $$x^2 + 4y^2 = 4$$ where the normal is parallel to the $x$-axis.
                                              $(2, 0)$ and $(-2, 0)$
                                              Find the coordinates of the points on the curve $$y^2 = x^3 - 12x$$ where the tangent is parallel to the $x$-axis.
                                                $(-2, 4)$ and $(-2, -4)$
                                                Find the coordinates of the points on the curve $$x^2 - y^2 = 16$$ where the tangent is parallel to the $y$-axis.
                                                  $(4, 0)$ and $(-4, 0)$
                                                  Find the equation of the tangent to the curve $$x^2 + xy + y^2 = 7$$ at the point $(1, 2)$.
                                                    $4x + 5y = 14$
                                                    Find the equation of the normal to the curve $$x^2 - y^2 = 9$$ at the point $(5, 4)$.
                                                      $4x + 5y = 40$
                                                      Find the equation of the normal to the curve $$x^2 + y^2 = 25$$ at the point $(3, 4)$.
                                                        $y = \dfrac{4}{3}x$
                                                        Find the equation of the tangent to the curve $$y^2 = x^3$$ at the point $(1, 1)$.
                                                          $3x - 2y = 1$
                                                          Find the equation of the tangent to the curve $$x^3 + y^3 = 9xy$$ at the point $(2, 4)$.
                                                            $5y = 4x + 12$
                                                            Find the equation of the normal to the curve $$xy = 8$$ at the point $(2, 4)$.
                                                              $2y = x + 6$