the figure shows a line graph and two shaded triangles that are similar:

which statement about the slope of the line is true? (5 points)
select one:
a. it is fraction 1 over 2 throughout the line.

b. it is 2 throughout the line.

c. the slope from point o to point a is fraction 1 over 2 time the slope of the line from
point a to point b.

d. the slope from point o to point a is two times the slope of the line from point a to point b.