2/3 is equal to 8/12 and 3/4 is equal to 9/12
Answer:
b. 44°
Step-by-step explanation:
Reference angle = x
Hypotenuse = 21
Adjacent = 15
Apply trigonometric function CAH:



x = 44.4153086° ≈ 44° (nearest degree)
If the Y value is the only one changing, the slope is undefined, as it is vertical. the answer is undefined.
(2,3). The vertex of a parabola is the highest or lowest point of the graph