What is 3x+y=-4? hurry. i really need to know!

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Which table shows a proportional relationship between miles traveled and gas used?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?