Solution: Let x be the height of a student in Marta's class.
The mean height of 18 students in Marta's class is 60 inches
We know that:
Therefore, the total measure of all 18 student's heights is 1080 inches
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The function will be given f(x) = -4 ( x -0.5)
<h3 /><h3>What is the equation of a line passing through two points?</h3>Graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
Suppose the given points are (x₁, y₁) and (x₂, y₂), then the equation of the straight line joining both two points is given by
We can see that the line is passing through the points ( 0.5,0) and ( 0,-2). so we will find the function by using the equation of the line passing through two points.
Write an equation for the trend line.
(x₁, y₁) → (0.5,0)
(x₂, y₂) → (0, -2)
Then we have
y - 0 = ( -2 - 0)/( 0 - 0.5)(x - 0.5)
y - 0 = ( -2/-0.5) ( x - 0.5)
y = -4 ( x -0.5)
Learn more about straight-line equations here:
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