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TRAIN STATIONS A train travels a straight route from Rolesville to Townsend. The railway would like to build a station along the route so that the ratio of the distance from Rolesville to the station and the distance from the station to Townsend is 3:4 . If the coordinates of Rolesville and Townsend on the map are R(1, 2) and T(8, 23) , respectively, what should be the coordinates of the new station?

Sagot :

coordinates of the new station= (5,98/4)

When two lines intersect at a point then the angle between them can be expressed in terms of their slopes and is given by the following formula:

tan θ = |

|where

are the slopes of the line AB and CD respectively.

If

is positive then the angle between the lines is acute. If

is negative then the angle between the lines is obtuse.

Slope of Vertical Lines

Vertical lines have no slope, as they do not have any steepness. Or it can be said, we cannot define the steepness of vertical lines.

A vertical line will have no values for x-coordinates. So, as per the formula of slope of the line,

Slope, m = (y2 – y1)/(x2 – x1)

But for vertical lines, x2 = x1 = 0

Therefore,

m = (y2 – y1)/0 = undefined

In the same way, the slope of horizontal line is equal to 0, since the y-coordinates are zero.

m = 0/(x2 – x1) = 0 [for horizontal line]

Positive and Negative Slope

If the value of slope of a line is positive, it shows that line goes up as we move along or the rise over run is positive.

If the value of slope is negative, then the line goes done in the graph as we move along the x-axis.

Let R,Q,T be the points that divide the line into 3:4 equal parts

Let the Q = (x,y)

R(1, 2) and T(8, 23) ,

x = m1x1+m2x2/m1+m2

y = m1y1+m2y2/m1+m2

X= 3.1+4.8/7

x= 3+32/7

x=35/7

x=5

y=2.3+23.4/3+4

y= 6+92/4

y=98/4

y= 24.5

(x,y) = (5,98/4)

More details: brainly.com/question/15165057

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