Sangeetha Pulapaka

STEP 1: Recall what is a linear function

STEP 2: Recall how to write a linear function from a word problem

STEP 3: Write the linear equation

Tamir has to walk 10 km, so let us take that as the y-intercept.

He walks one km per day so let us take the slope m as 1

Plugging in these values in the slope-intercept form we get

y = x + 6

STEP 4: Recall on how to solve for x

The total number of kilometres travelled by Tamir is 10, so plugging in y = 10

we get 10 = x + 6

x = 4

So, Tamir will have to make in 4 trips to school to walk 10 km.