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Question
what is the equation of the trend line in the scatter plot? use the two yellow points to write the equation in slope - intercept form. write any coefficients as integers, proper fractions, or improper fractions in simplest form.
Step1: Encontrar la pendiente \(m\)
Los dos puntos amarillos son \((1,0)\) y \((8,6)\).
La fórmula de la pendiente es \(m=\frac{y_2 - y_1}{x_2 - x_1}\).
Sustituyendo \(x_1 = 1,y_1=0,x_2 = 8,y_2 = 6\):
\(m=\frac{6 - 0}{8 - 1}=\frac{6}{7}\)
Step2: Encontrar la ecuación en forma pendiente - intersección \(y=mx + b\)
Usamos el punto \((1,0)\) y \(m=\frac{6}{7}\).
Sustituyendo en \(y=mx + b\):
\(0=\frac{6}{7}(1)+b\)
\(b=-\frac{6}{7}\)
Step3: Escribir la ecuación final
Sustituyendo \(m = \frac{6}{7}\) y \(b=-\frac{6}{7}\) en \(y=mx + b\):
\(y=\frac{6}{7}x-\frac{6}{7}\)
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\(y=\frac{6}{7}x-\frac{6}{7}\)