Question

Me ajudem por favor! é urgente! (dou bastante pontos) y = -x2 +6x-8 Resolva as funções de 2* grau, substituindo o x por: 0; 1; 2; 3; 4; 5; 6;

Answer 1

Resposta:

y = - x^2 + 6x - 8

x por: 0; 1; 2; 3; 4; 5; 6;

x = 0

y = -x^2 +6x - 8

y = ( - 0 )^2 + 6 × 0 - 8

y = ( 0 ) × ( 0 ) + 0 - 8

y = 0 + 0 - 8

y = -8

x = 1

y = -x^2 + 6x - 8

y = ( - 1)^2 + 6 × 1 - 8

y = ( -1 ) × ( -1 ) + 6 - 8

y = 1 + 6 - 8

y = 7 - 8

y = -1

x = 2

y = -x^2 + 6x - 8

y = ( - 2)^2 + 6 × 2 - 8

y = ( -2 ) × ( -2 ) + 12 - 8

y = 4 + 12 - 8

y = 16 - 8

y = 8

x = 3

y = -x^2 + 6x - 8

y = ( - 3)^2 + 6 × 3 - 8

y = ( -3 ) × ( -3 ) + 18 - 8

y = 9 + 18 - 8

y = 27 - 8

y = 19

x = 4

y = -x^2 + 6x - 8

y = ( - 4)^2 + 6 × 4 - 8

y = ( -4 ) × ( -4 ) + 24 - 8

y = 16 + 24 - 8

y = 36 - 8

y = 28

x = 5

y = -x^2 + 6x - 8

y = ( - 5)^2 + 6 × 5 - 8

y = ( -5 ) × ( -5 ) + 30 - 8

y = 25 + 30 - 8

y = 55 - 8

y = 47

x = 6

y = -x^2 + 6x - 8

y = ( - 6)^2 + 6 × 6 - 8

y = ( -6 ) × ( -6 ) + 36 - 8

y = 36 + 36 - 8

y = 72 - 8

y = 64