Anna kept track of the height of her fast-growing corn. Her records are shown in the table below.
What is the growth rate of Anna's corn? Is this number always the same?
Find the difference in height of Anna's corn from day
to day to find
how much her corn has grown in
Anna's corn grows
cm every days.
To find how much Anna's corn grows in
day, divide that number by .
The growth rate of Anna's corn is
cm per day.
If you graph the points in this table, will they form a line or a curve? Explain how you know.
If the growth rate of Anna's corn is constant, as concluded from (a),
what would a graph with constant growth look like?
If you need more help, graph the points on graphing paper.
Let the number of days be on the x-axis and the height in centimeters be on the
Since the rate of change is constant, the graph will form a line.
How would the growth rate show in the graph?
What would the graph look like if the number of days was on the
-axis, while the height in centimeters was on the -axis?
If the y-coordinate increases by
for every day, the growth
rate will be represented by the slope of the line.
If Anna harvests the corn when it reaches
meters, when will she harvest it? meters is equivalent to how many centimeters? meters is centimeters. When will the
-coordinate) reach ?
Find and use the rule to solve.