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warm-up linear equations & inequalities, day 10 algebra i 1. what is the equation of the linear function represented by the table? x 1 2 3 4 y 4 1 -2 -5 slope intercept: __________ standard: __________ 3. what is the equation in slope - intercept form of the
Step1: Calcular la pendiente $m$
$m=\frac{y_2 - y_1}{x_2 - x_1}$, tomando $(x_1,y_1)=(1,4)$ y $(x_2,y_2)=(2,1)$
$m=\frac{1 - 4}{2 - 1}=\frac{-3}{1}=-3$
Step2: Encontrar la intersección $b$ con la fórmula $y = mx + b$
Tomando $x = 1$ y $y = 4$ y $m=-3$ en $y=mx + b$
$4=-3\times1 + b$
$4=-3 + b$
$b = 4 + 3=7$
Step3: Escribir la ecuación en forma pendiente - intersección
$y=-3x + 7$
Step4: Pasar a forma estándar $Ax+By = C$
$y=-3x + 7$
$3x+y=7$
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Slope - intercept: $y=-3x + 7$
Standard: $3x + y=7$