m = 7 , pt (5 , 3)
Can anyone help please?
1 answer:
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m = 7 , pt (5 , 3)
Answer: y=1/2x-1
Step-by-step explanation:
To find the equation of the line that passes through the points, we need to find out slope, m.
We plug our points into this formula to find slope.
Our slope is 1/2. To find our y-intercept, b, we would plug any point into the equation for slope-intercept form.
y=mx+b
y=1/2x+b
1=1/2(4)+b
1=2+b
b=-1
Now that we know b, our equation is y=1/2x-1.
Answer:
The rate of the trains are 75 mph.
Step-by-step explanation:
Consider the provided information.
Train A and train B leave a central station at the same time with same speed, but in opposite directions.
Train A reaches station A after 4 h. train B reaches station B after 3 1/2 h.
The total time taken by train A and train B is:
Thus, the total time taken is 7.5 hrs.
It is given that station A and B are 562.5 mi apart.
That means both the trains cover 562.5 mi in 7.5hr
As we know: Rate = distance / time or Speed = distance / time
Here, rate and speed are the same thing.
Now substitute the respective values in the above formula.
Hence, the rate of the trains are 75 mph.