Which of the following best defines an input?

an input is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.

an input is a special type of relation for which there is a rule that pairs each input with exactly one output.

an input is a set of ordered pairs in which no y-value repeats.

an input is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph.

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.