Question 850135
the standard form for a line is y = mx + b where m is the slope and b is the y axis intercept.
the slope is the change in y divided by the change in x
note that we are given two points on the line, so we can calculate the slope
the two points are (-7,9) and (6,12), then
m = (12 - 9) / (6 - -7) = 3/13, therefore
y = (3/13)x + b
now we can substitute for x and y using the point (6,12)
12 = (3/13)*6 + b
12 = 18/13 +b
b = 12 - 18/13 = (156/13) - (18/13) = 138/13 
y = (3/13)x + 138/13
the slope is 3/13 and y intercept is 10 8/13