mypoptartstastegood mypoptartstastegood
  • 08-07-2017
  • Mathematics
contestada

Which equation represents the relationship shown in the table?
X Y
-4 -3
-2 -2
0 -1
2 0
4 1

A.) y= -1/2x-1 B.) y= x+1 C.) y=1/2x-1 D.) y= 1/2x+1

Respuesta :

texaschic101
texaschic101 texaschic101
  • 08-07-2017
(2,0)(4,1)
slope = (1 - 0) / (4 - 2) = 1/2

y = mx + b
slope(m) = 1/2
use any of ur points....(4,1)...x = 4 and y = 1
now sub and find b, the y int
1 = 1/2(4) + b
1 = 2 + b
1 - 2 = b
-1 = b

so ur equation is : y = 1/2x - 1 <==
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