Yes I think it’s s right triangle
You're very close. However, the less steep line should go through (4,7) and not some point slightly above that location. Also, the shaded region should be above both dashed lines at the same time. So you won't include the portion that I've marked in blue (see attached). Other than that, it looks great.
Pq= 10.5, qr=31.5, rs=10.5, sp=31.5
Given:
Amount of money in Tereka’s account : 
Amount of money in Emma’s account : 
To find:
The difference between initial amounts Tereka and Emma deposit.
Solution:
Substitute x=0 in the given functions, to get the initial amount of money they deposit.



So, the initial amount Tereka deposit is $472.



So, the initial amount Emma deposit is $485.
Difference between the initial amounts Tereka and Emma deposit is

Therefore, the difference between initial amounts Tereka and Emma deposit is $13. Emma deposit $13 more than Tereka.
The correct answer is 117
x + y = 236
y = x + 2
x + x + 2 = 236
2x = 236 - 2
2x = 234
x = 234/2
x = 117
y = 117 + 2
y =119
Both are odd integers and 117 is smaller.