The distance on thermometer B between the 110 °C mark and the −10 °C mark is 18 cm. Calculate the length of the liquid thread above the −10 °C mark when the temperature
recorded by B is 70 °C.
length =

*please provide detailed explanation*

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

where is the photo and the answer choices?

cant without the picture! ?

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over