Answer:
x = -1
Step-by-step explanation:
2x + 5x = -7
7x = -7
x = -1

So y=2x is the only answer that fit y=kx, while k=2
Answer:
Step-by-step explanation:
Rule Example
+(+) Two like signs become a positive sign 3+(+2) = 3 + 2 = 5
−(−) 6−(−3) = 6 + 3 = 9
+(−) Two unlike signs become a negative sign 7+(−2) = 7 − 2 = 5
−(+) 8−(+2) = 8 − 2 = 6
Answer:
I dont really know what this is asking but i think it would be 4/8 or 1/2
Step-by-step explanation:
Im sorry if its wrong