Mathematics 2 ESO – Unit 9 FUNCTIONS page 97 activity 53
1 – Watch the video on “How to Determine the Domain and range of a relation ” and answer:
- a) What is the domain?
- b) What is the range?
2 – For the function f(x) = x + 1
(Note: “f(x)” is how we call the variable “y” when we are speaking about functions).
| x | F(x) |
| 0 | |
| 1 |
- a) Fill the table of values:
- b) Draw the function.
3 – Draw these functions:
- a) y = –3
- b) y = 2x – 1
- c) y = x
- d) 6y = x
- e) 2y = x + 1
- f) 4y = (x/2) + 1
4 – Draw the following functions:
- a) The slope is 2 and the y-intercept is y = 3
- b) The slope is –3 and the y-intercept is y = –1
5 – Draw the following functions:
- a) The slope is −4 and passes through point (1,1)
- b) The slope is 3 and passes through point (–1, –4)
6 – Four kilograms of rice cost 3.2 €
- a) Write the function for the cost per kilogram of rice.
- b) Draw the function.
7 – At the age of 12, a student is 1437 mm tall. At the age of 18 the same student is 1728 mm tall.
Draw the function (remember that the growth is constant).