Solve the system by Substitution 4x+4y=−4

y=−7x−7

(-1, 0)

(0, 2)

(0, -4)

(0, -1)

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?