Question

Explain the number zero in context of the situation using words from the x and y axis to explain. See part C of the question only. Thank you

Answer 1

Given:

`y=20x+0`

Comparing the equation of the model to the equation of a straight line,

`\begin{gathered} y=mx+b \\ where: \\ m\text{ is the slope } \\ b\text{ is the y-intercept} \\ \\ Comparing\text{ the equation to }y=20x+0 \\ m=20 \\ b=0 \\ Hence,\text{ the y-intercept of the model is 0} \end{gathered}`

The y-intercept is the y-value when x = 0.

This means when the temperature was 0 degrees celsius, there were no sales of ceiling fan.

Therefore, the number 0 means no sale of fan was made when the temperature was 0 degrees celsius.