Function or not
is the following a function?
{(0,2),(-1,3),(3,2),(-4,5)}
yes the function is correct.
Find f(3)? f(x) = 2x -2 g(x) = 3x h(x)=x/2
f(3)=2(3)-2= 4
An snow vendor collects data on the number of snow cones he sells per day and the daily temperatures? What is the dependent variable?
the number of snow cones
What is the domain ? {(5,-2),(-3,-2),(0,-2),(-2,-2)}
{-3,-2,0,5}
The set of all y-values.
range
is the following function?
{-2,2),(0,1),(-2,3),(3,-1),(0,3)}
no the relation is not function
What is h(-2)? f(x) = 2x - 3 g(x) = 4x +2 h(x) = 2x^2
h(-2) is 8
A teacher wants to see if there is a relationship between her students test scores and the amount of time they study. What is the independent variable?
amount of time the student decides to study
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What is the range ? {(5,-2),(-3,-2),(0,-2),(-2,-2)}
{-2}
A graph with connected points showing maybe a line or curve.
continuous data
True or False? A function can have repeated y-values?
No, If the y-values repeat, it will cause the slope to be unidentified.
Which part of the function represents the y-variable or dependent variable? (f(x) or x?) f(x)=3x +2
f(x)
Independent Variables are the labels on the? axis
y axis is the independent variables the labels is set on.
Find the range of y=2x
slope =2 y-intercept =0
A set of all the x-values.
domain
What is the name of the method used to determine whether a graph is a function or not?
vertical line test
What is the x if f(x)=10? f(x) = x/2
20/2=10
In the following function, which is the independent variable? x or y?, y = 3x + 2
X is the independent variable.
the range of the following function? y = x^2
the range is y>0. y=(x−0)^2+0
A graph with points not connected.
discrete data
Functions cannot have repeated ? values.
X value
What is the range of the function below if the domain is {0,1,2,3,4}? f(x) = 2x-1
{-1,1,3,5,7}
In the equation, what is the dependent variable? P or s? P = 4s
P is the dependent variable
the range of the function below? y = 3x {Domain: 0,1,2,3,4)}
{0,3,6,9,12} is range
A graph, table or mapping that shows no repeated x-values.
function