Ches (yes). Hope this helps
<span>A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is the train’s original speed?
***
let x=original speed
x+5=increased speed
travel time=distance/speed
..
lcd:x(x+5)
150(x+5)-150x=x(x+5)
150x+750-150x=x^2+5x
x^2+5x-750=0
(x-25)(x+30)=0
x=25
What is the train’s original speed? 25 mph</span>
This is a line in the form y = mx + b, where b is the y intercept. In your equation above, 3 is the slope, the m value, and -6 is the y-intercept, the b value.
(X-2y)5=(3)5. 5x-10y=7 we - So 5x-10y-5x- 10y=-8
-20y=-8. y=8 over 20
Answer: the sum is always positive
