Hope this is what you are looking for
Answer:

Step-by-step explanation:
Line d slope is 8/7, therefore the perpendicular is -7/8
Answer:
Below.
Step-by-step explanation:
It is a polynomial of degree 3.
I'm not 100% sure this is right but I think this is how you do it
Answer:
6:9 ÷3
2:3
Step-by-step explanation:
1st write the ratio then simplify it with dividing with the Highest common factor on both sides