What is the slope of a line that is perpendicular to the line: -4x + 6y = -1 ?
1 answer:
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Answer:
See Explanation
Step-by-step explanation:
For : (0,3) (2,2)
The equation is in slope intercept form. y=mx+b
The y intercept is 3.
The slope is 1/2.
Moving one unit down and 2 units to the right, we get (2,2)
For : (0,-2) (1,0)
The y intercept is -2.
The slope is 2.
Moving 2 units up and 1 unit to the right, we get (1,0)
Try this solution:
Answer: 6 & 4.5 (m-per-h)
Step-by-step explanation:
- The basic formula used in this task is S=V*t, where S - distance, V - speed, t - time.
- the downstream speed is: V+Vc, where V - the speed of the boat in still water, Vc - the speed of the current.
- the upstream speed is: V-Vc.
- according to the described above the distance for downstream is S1=(V+Vc)*t1, where t1=10; the distance for upstream is S2=(V-Vc)*t2, where t2=70.
- for whole travel down- and upstream: S=S1+S2.
- Using these it is possible to make up the system of the equations:
V - the speed of the boat in still water - 6 miles per hour, Vc - the speed of the current - 4.5 miles per hour. All the details for the system of the equations are in the attachment.
