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wroportional relationships that start at (0,0). for example. oh
slem on the previous page does not include (0,0).
you are familiar with proportional relationships
worked means 0 dollars earned. the problem on the previo
the problem states that there were already 2 in
function starts at (0, 2), so the initial value, or starting output
snow on the ground at 0 hours. this
let's look at a graph of this function.
snowfall amounts
nches of
s storm at
initial value
mowed
depth of snow (in.)
vertical change = 1.5 units
horizontal change = 1 unit
o
0
1
2 3 4 5 6
time (hr)
the
bund
the graph also shows the rate of change. the x-values and y-values change at different
rates, but the ratio of these changes is always the same. from point to point the y-values
change by 1.5 units and the x-values change by 1 unit. so, the rate of change is 7 or 1.5.
you will discover later on in the lesson that functions can have many different initial values
and rates of change.
reflect
pur.
ora opened a savings account and deposited $50. when she gets her payche
veek, dora will put $25 into the savings account. describe the initial value an
· describe the initial value and rate of
change for this situation.
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