005 Sample Final A, Question 16

Question Graph the following,

$-x^{2}+4y^{2}-2x-16y+11=0$

Final Answers
a) False. Nothing in the definition of a geometric sequence requires the common ratio to be always positive. For example, Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle a_{n}=(-a)^{n}}
b) False. Linear systems only have a solution if the lines intersect. So y = x and y = x + 1 will never intersect because they are parallel.
c) False. $y=x^{2}$ does not have an inverse.
d) True. Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle cos^{2}(x)-cos(x)=0} has multiple solutions.
e) True.
f) False.

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