Rebecca picked 7 20 of a basket of apples yesterday. Today, she picked 7 16 of a basket of apples. What part of a basket of apples has Rebecca picked in all?

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )

i dont know the answer but here's a picture of a dog

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.