Determine whether the relation defines a function, and give the domain and range.
{(1, 2), (5, 4), (9, 7), (3, 8)}
Is the relation a function?
A. No, because each element of the domain (first component) is distinct and corresponds to exactly one range element (second component).
B. Yes, because each element of the domain (first component) is distinct and corresponds to exactly one range element (second component).
C. No, because not all the elements of the domain (first component) are distinct and correspond to exactly one range element (second component).
D. Yes, because not all of the elements of the domain (first component) are distinct and correspond to exactly one range element (second component).

Give the domain. Select the correct choice below and fill in the answer box to complete your choice.
A. The domain is the interval
nothing.
(Type your answer in interval notation.)
B. The domain is the set StartSet nothing EndSet

(Use a comma to separate answers as needed. Type each answer only once.)
Give the range. Select the correct choice below and fill in the answer box to complete your choice.
A. The range is the set StartSet nothing EndSet
.
(Use a comma to separate answers as needed. Type each answer only once.)
B. The range is the interval
nothing.
(Type your answer in interval notation.)

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?

Solve for the equation. 4x - 13 = 2x + 9

Atrain traveled for 1.5 hours to the first station, stopped for 30 minutes, then traveled for 4 hours to the final station where it stopped for 1 hour. the total distance traveled is a function of time. which graph most accurately represents this scenario? a graph is shown with the x-axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at the origin and moves upward for 1.5 hours. the line then continues upward at a slow rate until 2 hours. from 2 to 6 hours, the line continues quickly upward. from 6 to 7 hours, it moves downward until it touches the x-axis a graph is shown with the axis labeled time (in hours) and the y axis labeled total distance (in miles). a line is shown beginning at the origin. the line moves upward until 1.5 hours, then is a horizontal line until 2 hours. the line moves quickly upward again until 6 hours, and then is horizontal until 7 hours a graph is shown with the axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at the y-axis where y equals 125. it is horizontal until 1.5 hours, then moves downward until 2 hours where it touches the x-axis. the line moves upward until 6 hours and then moves downward until 7 hours where it touches the x-axis a graph is shown with the axis labeled time (in hours) and the y-axis labeled total distance (in miles). the line begins at y equals 125 and is horizontal for 1.5 hours. the line moves downward until 2 hours, then back up until 5.5 hours. the line is horizontal from 5.5 to 7 hours