hughesnatalia2003 hughesnatalia2003
  • 02-12-2018
  • Mathematics
contestada

Line CD passes through points C (1,3) and D (4,-3). If the equation of the line is written in slope intercept form, y=my+b, what is the value of b?

Respuesta :

SonOfZeus
SonOfZeus SonOfZeus
  • 02-12-2018

Answer:

b=5

Step-by-step explanation:

C(1,3) and point D(4,-3)

Since we want the equation in slope intercept form we must first calculate the slope (m):

[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\\\m=\frac{-3-3}{4-1}\\ \\m=\frac{-6}{3} \\\\m=-2[/tex]

By point slope formula and using point C (1,3) we have:[tex]y-y_{1}=m(x-x_{1})\\\\y=m(x-x_{1})+y_{1}\\\\y=-2(x-1)+3\\\\y=-2x+2+3\\\\y=-2x+5[/tex]


So the slope is -2 and the y -intercept (b) is 5.

Answer Link
Delgado007
Delgado007 Delgado007
  • 09-04-2020

Answer: B

Step-by-step explanation:

Answer Link

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