Sum means add
difference means subttract
x+y=1
x-y=11
add the 2 equations together
2x+0y=12
divide 2
x=6
subitute
6+y=1
subtract 6
y=-5
x=6
y=-5
The line rises to the left so the slope is negative.
Slope = rise / run = (3 - 1) / (-4-3) = 2 / -7
Answer is -2/7 (A)
Center of the circle is (5; -5)
So you do for example-
3 tens and 1 one. and then you do 2 tens and 6 ones and you add them to get 57 as your total!
~Hope that helped!~
~Izzy <3~
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