Linear Relationships
x+4=y
How many variables does the equation above
have? _________________
What does x + 4 = y mean?
It means that I can choose any number for x, then I
add 4 to that number and I get the answer which is
some number y.
x is the independent variable. Why is “x” the
independent variable? ____________________________
___________________________________________________
y is the dependent variable.
Make a table of values for
the equation x + 4 = y
Make a graph.
Consider the equation 2 x + 4 = y
What does 2 x + 4 = y mean? ____________________
___________________________________________________
___________________________________________________
Make a table of values for the
equation.
Make a graph.
Hannah starts with $100 in the bank. She adds $20 at
the end of each week.
What are the two variables? _______________________
And
_______________________
Which variables is the independent variable (causes
the other variable to change)? ____________________
Which variable is the dependent variable? _________
Make a table of values for the
equation.
Make a graph.
Connect the
points to make a
line.
How many dollars
will she have
after 8 weeks?
Amy starts with 40 chocolate chip cookies. She eats
5 cookies each day.
What are the two variables? _______________________
And
_______________________
Which variables is the independent variable (causes
the other variable to change)? ____________________
Which variable is the dependent variable? _________
Make a table of values for the
equation.
Make a graph.
Connect the
points to make a
line.
How many
cookies will she
have after 6
days?