Write an equation for each linear function described. Show your work. The graph of the function passes through the point (2,1), and y increases by 4 when x increases by 1.

Step-by-step explanation:

As

so

x             y

2             1

3             5

4             9

5             13

6             17

and so on

From the table:

As the slope-intercept form of the line is

putting m=4 and any point, let say (2, 1) to find y-intercept 'b'.

So putting and  in the slope-intercept form of the line

Therefore, the equation for the linear function will be:

both equations and proportions are better.