The graph below shows the height through which an elevator travels, y, in x seconds: A graph is shown with x-axis title as Time in seconds. The title on the y-axis is Height of Elevator Above Ground in feet. The values on the x-axis are from 0 to 5 in increments of 1 for each grid line. The values on the y-axis are from 0 to 75 in increments of 15 for each grid line. A line is shown passing through the ordered pairs 1, 15 and 2, 30 and 3, 45 and 4, 60. The title of the graph is Rate of Ascent.

What is the rate of change for the relationship represented in the graph?

fraction 1 over 15
fraction 1 over 14
14
15

Step-by-step explanation:

Rate of change is:

Substitute values with ordered pairs:

Correct option is D. 15

A line is shown passing through the ordered pairs (1, 15) and (2, 30) and (3, 45) and (4, 60).

The rate of change of height :---

angle uzt is congruent to angle tzy. angle vzw is congruent to angle yzx.

(credits to leowren)

step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐