Relations and Functions
In our daily life, we come across many relations such as father-son, brother-sister, teacher-student and many more. In mathematics too, we come across relations such as . A is a subset of B . line l is parallel to line m . number m is less than number n . In all these,..
Formula
The average weight of each of 'p' boys and 'q' girls is x kg and y kg respectively. Frame a formula for the average weight of (p + q) students. Average weight of each of 'p' boys = x kg Their total weight = px kg Average weight of each of 'q' girls = y kg Their total weight = qy kg Total ..
The average weight of each of 'p' boys and 'q' girls is x kg and y kg respectively. Frame a formula for the average weight of (p + q) students. Average weight of each of 'p' boys = x kg Their total weight = px kg Average weight of each of 'q' girls = y kg Their total weight = qy kg Total ..Many-one function
The relation is not a function. {(1, 1), (2, 1), (2, 2), (3, 3)}; many - many relation. Two images have a common pre-image. The relation is not a function. The relations given in examples 6 and 7 are not functions. These examples given above should make clear to the students the definitio..
The relation is not a function. {(1, 1), (2, 1), (2, 2), (3, 3)}; many - many relation. Two images have a common pre-image. The relation is not a function. The relations given in examples 6 and 7 are not functions. These examples given above should make clear to the students the definitio..289 elementary school students and 120 middle school students wrote le..
289 elementary school students and 120 middle school students wrote letters for a time capsule. Estimate the total number of letters written. => 410 or 400 or 300 or 500..
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In St. Paul's Elementary School, 30 students like Apple, 40 like Mango..
In St. Paul's Elementary School, 30 students like Apple, 40 like Mango, 40 like Banana, 30 like Apricot, 50 like Orange, and 20 like Pear. Which pictograph represents the data correctly? => Graph 1 or Graph 2 or Graph 3 or Graph 4..
In a class, 9 students like algebra, 11 like geometry, and 8 like stat..
In a class, 9 students like algebra, 11 like geometry, and 8 like statistics. Which type of graph can be used to show the data? => stem-and-leaf plot or bar graph or line plot or circle graph..
The table shows the number of students enrolled in the elementary, the..
The table shows the number of students enrolled in the elementary, the middle, and the high school. Choose the bar graph that represents the data given in the table. Year Elementary school Middle school High school 1985 34 13 14 1990 36 14 10 1995 38 14 14 2000 37 15 1..
Find the mode for the data shown in the line plot, which shows the fav..
Find the mode for the data shown in the line plot, which shows the favorite topics in mathematics for grade 9 students. => Statistics or Probability or Geometry or Algebra..
Find the mode for the data shown in the line plot, which depicts the f..
Find the mode for the data shown in the line plot, which depicts the favorite topics in mathematics for grade 9 students. => Geometry or Statistics or Probability or Algebra..
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