Answer:
Step-by-step explanation:

since we know that
in this expansion is 
thus 
Hope that helps!
Answer:
d) 4
For the second question, just plug in the x value and isolate the y value
Step-by-step explanation:
1. 9y=36-13x
y=4-13/9 x
4 is the y-intercept
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation: