Answer:
y= -x +9
Step-by-step explanation:
The general equation of a line in slope intercept form is y=mx+b, where m is the slope and b is the y-intercept
For the given graph
Thake ANY 2 points on the line, for example (0,9) and (9,0) and calculate the slope
m= difference in y coordinates/ difference in x coordinates
=(9-0)/ (0-9) = 9/-9 = -1
b =9 because the given line is intersecting the y-axis at point (0,9)
The euation of the red line is y= -x +9
