Question 4120
Start with the slope-intercept form of the equation:
  y = mx + b 
Substitute: m = -7/5
y = (-7/5)x + b
The x-intercept is 5.  This means that when y = o, then x = 5  Substitute these.
0 = (-7/5)(5) + b       Now solve for b.
b = 7

Finally: The equation is: y = (-7/5)x + 7