What would be the x value of the point (x,5) if the equation of the line is: y=2x-2

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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?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?