Which of the following does not represent a function? a. graph of an absolute value function b. graph of a negative parabola oriented about the y axis with y intercept at positive 6 c. graph of an ellipse with y intercepts negative 7 and positive 7 d. graph of a line with a positive slope and y intercept of negative 6

C. graph of an ellipse with y intercepts negative 7 and positive 7

Explanation:

An ellipse is an oval shape.  In order to represent a function, a graph must pass the vertical line test; that is, a vertical line drawn through any area of the graph must only pass through one point.  In an oval, or ellipse, a vertical line will pass through twice; this means it is not a function.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

the answer is d

step-by-step explanation: