Wren recorded an outside temperature of â€"2°F at 8 a. M. When she checked the temperature again, it was 4°F at 12:00 p. M. If x represents the time and y represents the temperature in degrees Fahrenheit, what is the slope of the line through these two data points? â€"1. 5 â€"0. 5 0. 5 1. 5.

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.