Answer:
-7
Step-by-step explanation:
y−x=9 ⇒ y=x+9
10+2x=−2y
5+x= -y ====== replacing y with x+9
5+x= -x-9
2x= -14
x= -7
Answer:
1
6
4
10
14
18
8
16
12
4
6
8
10
12
14
16
18
26
Step-by-step explanation:
Answer:
70
Step-by-step explanation:
all the angles of a triangle sum 180, so 180 - (70 + 40) = 70
The first number is the X coordinate and the second number is the Y coordinate.
Looking left to right the lines intersect at X = 1
Looking up and down they intersect at Y = -3
The answer is C. (1,-3)
