valeriegarcia12
valeriegarcia12 valeriegarcia12
  • 21-12-2017
  • Mathematics
contestada

Help please !!!!!!!!!!!!!!

Help please class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 21-12-2017
3x - 4y = 21

if (7,0) then
3(7) - 4(0) = 21
21 = 21
TRUE

if (-1,-6) then 
3(-1) - 4(-6) = 21
-3 + 24 = 21
21 = 21
TRUE

if (-3,3) then 
3(-3) - 4(3) = 21
-9 - 12 = 21
-21 = 21 ....-21 can't equal 21
.....this is FALSE


if (11,3) then 
3(11) - 4(3) = 21
33 - 12 = 21
21 = 21 
TRUE

answer
A, B, D
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