Math
posted by subash on .
Find the equation of the straight line that passes through the points (−1, 5) and (5, −1). Find the coordinates of the point where this line crosses the yaxis.

The slope is [5  (1)]/(1 5) = 1
The equation is y = x + b
To pass through (1,5),
5 = 1 + b
b = 4
y = x +4
The yintercept is at (0,4) .