Final answer:
The equation in point-slope form is (y - 7) = -1/3(x - (-9)). The equation in slope-intercept form is y = -1/3x + 4.
Step-by-step explanation:
To write the equation in point-slope form, we can use the formula:
(y - y1) = m(x - x1)
where m is the slope and (x1, y1) are the coordinates of one of the points.
Using the points (-9,7) and (6,2), we can calculate the slope:
m = (y2 - y1) / (x2 - x1) = (2 - 7) / (6 - (-9)) = -5 / 15 = -1/3
Now, let's use the point (-9,7):
(y - 7) = -1/3(x - (-9))
Expanding and simplifying the equation, we get:
y - 7 = -1/3x - 3
Finally, let's write the equation in slope-intercept form:
y = -1/3x + 4