The equation of a line with x-intercept 7 and y-intercept -7 is :

1. x - y = 7

2. y - x = 7

3. x + y + 7 = 0

4. x + y = 7

The line 5x - 2y + 8 = 0, intersects the y-axis at point A, the co-ordinates of point A are :

1. (0, -4)

2. (4, 0)

3. (4, 4)

4. (0, 4)

Find the equation of a line whose :

y-intercept = -1 and inclination = 45°.