The temperature in Chicago was -3℉ at 8am. temperature increased 5℉ by noon. The temperature then decreased 7℉ by 4pm. What was the temperature in Chicago at 4pm?

The temperature is -5F

Step-by-step explanation:

You start at -3 then add 5 to get 2 degrees Fahrenheit then you subtract 7 to get -5 degrees Fahrenheit

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?