Why are
equations
useful any
way?
Equations are
useful because
they save your
time! Graphs and
tables are harder
and very time
consuming... but
with an equation,
they are quicker
Variables are
SUPER!
Tables Graphs and Equations are
all very different. Tables are
useful in that they give you the
exact number of the data, but do
not show it to you visually.
Graphs explain the data in a visual
way, but the data provided in it
may not be exact like in a table or
equation. Equations are quick and
easy to write but sometimes
complicated to solve.
The decisions
you need to
make when
writing an
equation to
see the
relationship
between the
variables are
first you need
to identify the
variables and
fill them in
with the
numbers that
represent the
variable.
You also need
to figure out
whether or not
the variables
need to be
multiplied,
divided,
subtracted, or
added to find
their relation.
Jim and his
friends are trying
to figure out
whether they
should switch to
Geico or stay with
their car
insurance as it is.
Geico offers a X
amount or more
discount on car
insurance while
other car in
surance
companies only
give you Y amount.
Geico's discount
(X) equals 15% and
the other car
insurance (Y)
equals 10%. Which
car company
should Jim and his
friends choose?
GEICO!
Geico's company
offered a better
percentage
discount than
the other
company. The
variables in this
problem would
equal the
percentage of
discount they
The equation you
could use could
be:
D=15%-10% to
get the
difference
of 5%