Respuesta :
If they are collinear, slope between any two points is the same.
Between (-2, 5) and (1, 1).
Slope = Change in y / Change in x = (1 - 5) / (1 - -2) = -4/3
Slope between (0, T) and (1, 1)
Slope = (1 - T) / (1 - 0) = -4/3
(1 - T) /1 = -4/3
1 - T = -4/3
-T = -4/3 - 1
-T = -7/3
T = 7/3
Between (-2, 5) and (1, 1).
Slope = Change in y / Change in x = (1 - 5) / (1 - -2) = -4/3
Slope between (0, T) and (1, 1)
Slope = (1 - T) / (1 - 0) = -4/3
(1 - T) /1 = -4/3
1 - T = -4/3
-T = -4/3 - 1
-T = -7/3
T = 7/3
The value of T such that (-2,5) , (0,T) , (1,1) are colinear will be 7/3.
What is slope?
A slope is a tangent or angle at a point or a slope is the intensity of inclination of any geometrical lines.
Slope = Tanx where x will be the angle from the positive x-axis at that point.
The slope could be positive or negative.
The slope is also calculated by differentiation for example slope of y = sinx will be y' = cosx.
Given,
(-2,5) , (0,T) , (1,1)
Three points are colinear so the slope will be the same.
Slope = difference in ys coordinate/difference in x coordinate
Slope associate with (-2,5) and (0,T)
(T - 5 )/( 0 +2 )
Slope associate with (0,T) , (1,1)
(1 - 0)/( 1 - T)
Equate both points
(T - 5 )/( 0 +2 ) = (1 - 0)/( 1 - T)
T = 7/3
Hence the value of T such that all three points are colinear will be 7/3.
To learn more about slopes,
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