With the function that you entered of f(x)=3x, plot points, determine the intercepts, domain, range

Determine function type:

Since we have a number raised to a variable:
this is an exponential function

Now Plot points from 10 to -10

xPlug in xf(x) = 3xOrdered Pair
-103-101.693508780843E-5(-10, 1.693508780843E-5)
-93-95.0805263425291E-5(-9, 5.0805263425291E-5)
-83-80.00015241579027587(-8, 0.00015241579027587)
-73-70.00045724737082762(-7, 0.00045724737082762)
-63-60.0013717421124829(-6, 0.0013717421124829)
-53-50.0041152263374486(-5, 0.0041152263374486)
-43-40.012345679012346(-4, 0.012345679012346)
-33-30.037037037037037(-3, 0.037037037037037)
-23-20.11111111111111(-2, 0.11111111111111)
-13-10.33333333333333(-1, 0.33333333333333)
0301(0, 1)
1313(1, 3)
2329(2, 9)
33327(3, 27)
43481(4, 81)
535243(5, 243)
636729(6, 729)
7372187(7, 2187)
8386561(8, 6561)
93919683(9, 19683)
1031059049(10, 59049)

Determine the y-intercept:

The y-intercept is found when x is set to 0. From the grid above, our y-intercept is 1

Determine the x-intercept

The x-intercept is found when y is set to 0
The y-intercept is found when y is set to 0. From the grid above, our x-intercept is 0

Determine the domain of the function:

The domain represents all values of x that you can enter
The domain is (-∞, ∞) or All Real Number

Determine the range of the function:

The range is all the possible values of y or f(x) that can exist
The range is (0, ∞) or All Positive Real Numbers


(-10, 1.693508780843E-5)
(-9, 5.0805263425291E-5)
(-8, 0.00015241579027587)
(-7, 0.00045724737082762)
(-6, 0.0013717421124829)
(-5, 0.0041152263374486)
(-4, 0.012345679012346)
(-3, 0.037037037037037)
(-2, 0.11111111111111)
(-1, 0.33333333333333)
(0, 1)
(1, 3)
(2, 9)
(3, 27)
(4, 81)
(5, 243)
(6, 729)
(7, 2187)
(8, 6561)
(9, 19683)
(10, 59049)


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Common Core State Standards In This Lesson
CCSS.MATH.CONTENT.6.EE.C.9,CCSS.MATH.CONTENT.8.F.A.1
What is the Answer?
(-10, 1.693508780843E-5)
(-9, 5.0805263425291E-5)
(-8, 0.00015241579027587)
(-7, 0.00045724737082762)
(-6, 0.0013717421124829)
(-5, 0.0041152263374486)
(-4, 0.012345679012346)
(-3, 0.037037037037037)
(-2, 0.11111111111111)
(-1, 0.33333333333333)
(0, 1)
(1, 3)
(2, 9)
(3, 27)
(4, 81)
(5, 243)
(6, 729)
(7, 2187)
(8, 6561)
(9, 19683)
(10, 59049)
How does the Function Calculator work?
Free Function Calculator - Takes various functions (exponential, logarithmic, signum (sign), polynomial, linear with constant of proportionality, constant, absolute value), and classifies them, builds ordered pairs, and finds the y-intercept and x-intercept and domain and range if they exist. Table of Functions Calculator
This calculator has 1 input.
What 5 formulas are used for the Function Calculator?
The y-intercept is found when x is set to 0
The x-intercept is found when y is set to 0
The domain represents all values of x that you can enter
The range is all the possible values of y or ƒ(x) that can exist
What 4 concepts are covered in the Function Calculator?
domain
Set of all possible input values which makes the output value of a function valid
function
relation between a set of inputs and permissible outputs
ƒ(x)
ordered pair
A pair of numbers signifying the location of a point
(x, y)
range
Difference between the largest and smallest values in a number set
Example calculations for the Function Calculator

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