onlymyworld27
onlymyworld27 onlymyworld27
  • 09-10-2018
  • Mathematics
contestada

Which of the following points are solutions to the equation
y=3x+5

(7,16)
(-2,1)
(2,11)
(-7,16)

select two

Respuesta :

jimrgrant1 jimrgrant1
  • 09-10-2018

I only get one (2, 11)

to find the points which are solutions, substitute the x-coordinate into the equation and if the value obtained equals the y-coordinate of the point then it is a solution

(7, 16) : y = (3 × 7 ) + 5 = 21 + 5 = 26 ≠ 16

( - 2, 1): y = (3 × - 2) + 5 = - 6 + 5 = - 1 ≠ 1

(2, 11) : y = (2 × 3) + 5 = 6 + 5 = 11

( - 7,16 ): y = (3 × - 7) + 5 = - 21 + 5 = - 16 ≠ 16

the only point from the given list that is a solution is (2 , 11)


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