The temperature of a substance was recorded over several minutes, as shown in the graph below. The graph displays the linear relationship between the temperature (measured in degrees Celsius) and the number of minutes the substance was being observed.
Temperature Over Time
Temperature (°C)
Time (Minutes)
Which statement best describes the slope of the graph?
Responses
A The temperature is increasing 3.25°C each minute.The temperature is increasing 3.25°C each minute.
B The temperature is increasing 5.25°C each minute.The temperature is increasing 5.25°C each minute.
C The temperature is increasing 1.25°C each minute.The temperature is increasing 1.25°C each minute.
D The temperature is increasing 7.25° C each minute.
The slope of a linear graph represents the rate of change. In this case, the slope represents the rate at which the temperature is increasing over time. Looking at the graph, we can see that the temperature increases by approximately 1.25°C for every 1 minute. Therefore, the correct statement is:
C) The temperature is increasing 1.25°C each minute.