C. add 3 to 15 because the sequence is +3 every time
If we add the equations it looks like
-5y + 8x + 5y + 2x = -18+58
so 10x=40
so x=40/10=4
now let's replace x by 4 in the second equation
5y +2*4=58
5y=58-2*4=58-8=50
so y=50/5=10
so (x, y) = (2, 10)
Answer:
(-7 and 3) (-5 and 1) (-3 and -1)
Step-by-step explanation:
If you add all of them you get -4.
Horizontal means zero slope, or a zero coefficient on x.
Answer: y = b
Not clear your question !
