The slope is 0.
The formula to find the slope is y2-y1 over x2-x1. If you plug in your numbers, you should have 5-5 over 9-10. Subtract this and you will get your slope!
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19/50 multiply 2 on numerator and denominator it becomes 38/100
38/100 = 0.38 since 38/100 is 38 divide by 100 which is 0.38
(2y + 5)° = 4y °
- 4y + 2y° = -5°
-2y° = -5°
y =5/2
