(05.02)
Look at the graph shown:
lo
2
3
4
5
Which equation best represents the line?
Oy = 3x + 3
Oy = x-3
Oy = kx +3
Oy = 3x + 3

Step-by-step explanation:

Let the equation of the line be:

where m is the slope and b is the y-intercept.

The given straight line has a y-intercept at

The equation is of the form

The line passes through the point (2,4).

Let us substitute x=2, and y=4 to find the value of m.

The slope is

Hence the equation of the line is  

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)