Problema Solution
If y degree centigrade is the temperature at the altitude of x km when the temperature at ground level is 15 degree C, y is given by the linear function y=-6x+15. According to the function,
1) a the altitude increases by 1Km , the temperature decreases by ?
Answer provided by our tutors
The temperature at the altitude of x km is:
y=-6x+15
The temperature at the altitude of x+1 km is:
y1=-6(x+1)+15
The temperature decrease is:
y - y1 = -6x+15 - (-6(x+1)+15) = -6x +6x + 6 = 6 degrees C