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Question
which statements are true about the line of best fit for the data in the scatter plot? its slope is about 25. it crosses the y - axis at about (0, 50). it has a negative slope. its slope is about - 10. it has a positive slope. it crosses the y - axis at about (0, 10).
Step1: Observar la tendencia de la pendiente
Como los puntos de datos se elevan a medida que aumenta el valor de \(x\), la pendiente es positiva.
Step2: Estimar la pendiente
Tomar dos puntos aproximados, por ejemplo, \((0,10)\) y \((1,35)\). La fórmula de la pendiente \(m=\frac{y_2 - y_1}{x_2 - x_1}\). Aquí \(x_1 = 0,y_1 = 10,x_2=1,y_2 = 35\), entonces \(m=\frac{35 - 10}{1-0}=25\).
Step3: Estimar la intersección con el eje \(y\)
Observando el valor de \(y\) cuando \(x = 0\), se ve que está cerca de \(y = 10\).
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- Its slope is about 25.
- It has a positive slope.
- It crosses the y - axis at about \((0,10)\).