Beyond the Basics

83. (4, 8) and (16, 6)
85. ${(x - \frac{3}{4})}^{2} = \frac{1}{2} (y - \frac{31}{8})$ ${(x - \frac{3}{4})}^{2} = \frac{1}{2} (y - \frac{31}{8})$
87. Vertex: $(4, 6);$ $(4, 6);$ focus: $(4, \frac{11}{2});$ $(4, \frac{11}{2});$ directrix: $y = \frac{13}{2};$ $y = \frac{13}{2};$ axis: $x = 4$ $x = 4$
89. Vertex: $(- 2, 3);$ $(- 2, 3);$ focus: $(- \frac{11}{4}, 3);$ $(- \frac{11}{4}, 3);$ directrix: $x = - \frac{5}{4};$ $x = - \frac{5}{4};$ axis: $y = 3$ $y = 3$
91. $y = 6 x - 3$ $y = 6 x - 3$
95. $18 {units}^{2}$ $18 {units}^{2}$

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Table of Contents for Beyond the Basics