theoffcialdorian theoffcialdorian
  • 26-01-2021
  • Mathematics
contestada

What is an equation of the line that passes through the points (-4,1) and (4,4)?

Respuesta :

Renae360
Renae360 Renae360
  • 26-01-2021

Answer:

y = [tex] \frac{3}{8} x + \frac{5}{2} [/tex]

Step-by-step explanation:

☆Remember: [tex]m =  \frac{y_2 - y_1}{x_2 - x_1} [/tex]

☆Remember: Slope-intercept form -> y = mx + b

☆Now. We first need to find the slope.

[tex]m =  \frac{4 - 1}{4 - (- 4)} = \frac{3}{8} [/tex]

☆Now the y-intercept.

[tex]y = mx + b \\ \\ 4 = \frac{3}{8} (4) + b \\ \\ 4 = \frac{3}{2} + b \\ \frac{ - \frac{ 3}{ 2} = - \frac{ 3}{ 2} \: \: \: \: \: \: \: \: \: \: }{ \frac{5}{2} = b } [/tex]

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