On one hand, functions are a fairly abstract concept, but on the other hand, they are very useful in many areas of mathematics. The topic of functions dominates many fields, including algebra, trigonometry, differential and integral calculus, and more. Therefore, it's important to understand the concept of functions, so that it can be applied in any of the fields of mathematics, and especially when we start learning about functions in seventh grade.

Practice Functions

Exercise #1

In what interval is the function increasing?

Purple line: x=0.6 x=0.6

111222333111000

Video Solution

Answer

x<0.6

Exercise #2

In what domain does the function increase?

–20–20–20–10–10–10101010202020–10–10–10101010000

Video Solution

Answer

x > 0

Exercise #3

In what domain is the function negative?

–0.5–0.5–0.50.50.50.51111.51.51.5222000

Video Solution

Answer

x > 1

Exercise #4

In what domain is the function increasing?

–5–5–5555101010151515–5–5–5555000

Video Solution

Answer

Entirex x

Exercise #5

In what domain does the function increase?

000

Video Solution

Answer

x<0

Exercise #1

In what domain does the function increase?

Black line: x=1.1 x=1.1

–2–2–2222444666222000

Video Solution

Answer

1.1 > x > 0

Exercise #2

In which interval does the function decrease?

Red line: x=1.3 x=1.3

–4–4–4–2–2–2222444666888101010–2–2–2222444000

Video Solution

Answer

1.3 > x > -1.3

Exercise #3

In what domain does the function increase?

Green line:
x=0.8 x=-0.8

–2–2–2222222000

Video Solution

Answer

All values of x x

Exercise #4

In which interval does the function decrease?

Red line: x=0.65 x=0.65

111222333–1–1–1111000

Video Solution

Answer

All values of x x

Exercise #5

In which domain is the function increasing?

f(x)x-44-1100116210014-78-9

Video Solution

Answer

10 > x > 0

Exercise #1

In which domain does the function decrease?

f(x)x001223354352607-4

Video Solution

Answer

x>3

Exercise #2

In which domain is the function increasing?

f(x)x-54-11102-14-25-57-78-9

Video Solution

Answer

No upward dominance

Exercise #3

In which domain does the function decrease?

f(x)x-57-1.58-110014215303.5250

Video Solution

Answer

Answers B and C are correct

Exercise #4

In which domain is the function increasing?

x-1010-78-360425463.5789

Video Solution

Answer

x>0

Exercise #5

In which domain does the function decrease?

x-210-1.58-0.560021353.5759

Video Solution

Answer

x<0