Answer:
y = -1/4x + 2
Explanation:
First you have to pick 2 points on the line, then you find the slope of the line from those 2 points. The slope formula is m = (y2-y1) / (x2-x1), and filling the variables in with the points (0,2) and (4,1) gives you m = (1-2) / (4-0), which gives you m = -1/4.
Once you have found the slope, you look for the y-intercept which is the point where the x-value is 0, and that is 2 in this graph.
You can then put this information into slope-intercept form, y= mx + b. m represents the slope and b represents the y-intercept. The answer is y = -1/4x + 2