Balloon Elevation 460-
Think About the Process Why is a data point with an
x-coordinate of O a good point to use when creating a trend
line for a data set? The graph shows the altitude of a
weather balloon over time. The trend line passes through the
points (0,436) and (10,342). Write the equation of a trend line
for the data shown in the graph. After how many minutes is
the balloon at an altitude of 351.4 feet above sea level?
Altitude (ft)
390-
320+
Why is a data point with an x-coordinate of 0 a good point to use when creating a trend line for a
data set? Select all that apply.
DA. It is easy to compute the slope using this point.
B. The coordinates of this point are both 0.
C. The y-coordinate of this point is always positive.
D. The y-coordinate of this point is the y-intercept.