3.1 Practice

What is an independent variable?

• It is any value in the domain. It's what is changed or plugged into the function.

• It is the value you get after solving a function.

• It does not exist.

• It is the x-value that repeats in a table or list of coordinate pairs.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Determine whether the relation is (7,4), (5,-1), (3,-8), (1, -5), (3,6) and what is the correct explanation?

• The relation is a function because one or more inputs have 2 outputs.

• The relation is a function because all inputs have exactly one output.

• The relation is not a function because one or more inputs have 2 outputs

• The relation is not a function because all inputs have exactly one output.

Tags

CCSS.8.F.A.1

Determine whether the relation is a function. Explain.

• The relation is not a function because all inputs have exactly one output.

• The relation is a function because one or more input has two outputs.

• The relation is not a function because one or more input has two outputs.

• The relation is a function because all inputs have exactly one output.

Tags

CCSS.8.F.A.1

Determine whether the relation is a function. Explain

• The relation is a function because one or more inputs have two outputs.

• The relation is a function because all inputs have exactly one output.

• The relation is not a function because all inputs have exactly one output.

• The relation is not a function because one or more inputs have two outputs.

Tags

CCSS.8.F.A.1

Determine whether the relation represents a function. Explain

• The relation is a function because one or more inputs have two outputs.

• The relation is a function because all inputs have exactly one output.

• The relation is not a function because all inputs have exactly one output.

• The relation is not a function because one or more inputs have two outputs.

Tags

CCSS.8.F.A.1

What is a dependent variable?

• It depends on the values of the independent variable.

• It does not exist

• It depends on how you feel

• It's what you plug in or substitute into the function.

Tags

CCSS.6.EE.C.9

Determine whether the relation represents a function. Explain.

• The relation is a function because it has straight lines

• The relation is a function because all inputs have exactly one output

• The relation is not a function because one or more input has two outputs

• The relation is not a function because I said so

Find the domain and range of the function represented by the graph.

• Domain: 2<x<7

  Range: 1<y<6

• Domain: 1<y<6

  Range: 2<x<7

• Domain: 1<x<6

  Range: 2<y<7

• Domain: 2<y<7

  Range: 1<x<6

The function y=25x+100 represents your monthly rent y (in dollars) when you pay x days late.

Identify the independent and dependent variables.

• There are not independent or dependent variables because this isn't a function.

• Independent: y

  Dependent: x

• Independent: x

  Dependent: y

• There's no such thing as variables.

Tags

CCSS.6.EE.C.9

The function y=25x+100 represents your monthly rent y (in dollars) when you pay x days late.

The domain is 0, 1, 2, 3, and 4. What is the range?

• 100, 125, 150, 175, 200

• -100, -125, -150, -175, -200

• 25, 50, 75, 100

• -25, -50, -75, -100