The equation y = 36 + 18x models the relationship
between the height y, in inches, of a typical golden
delicious apple tree and the number of years, x, after
it was planted. if the equation is graphed in the
xy-plane, what is indicated by the y-intercept of the
graph?
a) the age, in years, of a typical apple tree when it
is planted
b) the height, in inches, of a typical apple tree
when it is planted
c) the number of years it takes a typical apple tree
to grow
d) the number of inches a typical apple tree grows
each year