a line passes through the points (-2, -3) and (1, -9). write its equation in slope - intercept form. write…

a line passes through the points (-2, -3) and (1, -9). write its equation in slope - intercept form. write your answer using integers, proper fractions, and improper fractions in simplest form.

a line passes through the points (-2, -3) and (1, -9). write its equation in slope - intercept form. write your answer using integers, proper fractions, and improper fractions in simplest form.

Answer

Answer:

$y = - 2x - 7$

Explanation:

Step1: Calcular la pendiente

$m=\frac{y_2 - y_1}{x_2 - x_1}=\frac{-9-(-3)}{1 - (-2)}=\frac{-9 + 3}{1+2}=\frac{-6}{3}=-2$

Step2: Encontrar la intersección en y

Usamos la ecuación $y=mx + b$ y uno de los puntos, digamos $(x = 1,y=-9)$. $-9=-2\times1 + b$ $-9=-2 + b$ $b=-9 + 2=-7$

Step3: Escribir la ecuación en forma pendiente - intersección

$y=-2x-7$