Understanding Logarithmic Functions

Understanding Logarithmic Functions

Assessment

Interactive Video

Mathematics

9th - 12th Grade

Hard

CCSS
HSF-IF.C.7E, HSF.BF.B.5

Standards-aligned

Created by

Lucas Foster

FREE Resource

Standards-aligned

CCSS.HSF-IF.C.7E
,
CCSS.HSF.BF.B.5
The video tutorial explains how to graph the function y = log base 5 of x by converting it into its exponential form. It discusses the relationship between logarithms and exponents, and how to create a table of values to plot the graph. The tutorial also covers calculating specific x and y values for different powers and graphing the function while considering its domain, which is x > 0.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the equation y = log base 5 of x represent?

y is the power to which 5 must be raised to get x

x is the power to which y must be raised to get 5

y is the base that must be raised to 5 to get x

x is the base that must be raised to y to get 5

Tags

CCSS.HSF-IF.C.7E

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When choosing values for graphing, why is it beneficial to select x values that result in simple powers of 5?

To ensure the graph is a straight line

To make the graph look more complex

To make the graphing process faster

To avoid using a calculator

Tags

CCSS.HSF.BF.B.5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If y = -2, what is the corresponding x value in the function y = log base 5 of x?

1/5

1/25

5

25

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the domain of the function y = log base 5 of x?

x < 0

x ≤ 0

x > 0

x = 0

Tags

CCSS.HSF-IF.C.7E

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't the logarithmic function y = log base 5 of x be defined for x ≤ 0?

Because 5 raised to any power is always positive

Because 5 raised to any power cannot be zero or negative

Because 5 raised to any power is always negative

Because 5 raised to any power is always zero

Tags

CCSS.HSF-IF.C.7E

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the value of y as x approaches zero in the graph of y = log base 5 of x?

y approaches positive infinity

y approaches zero

y approaches negative infinity

y remains constant

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the graph of y = log base 5 of x, what is the y-value when x = 5?

5

2

0

1

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