Question

if x=-1 then what is y. y=-x^2-5x-4

Answer 1

plug and chug y=-(-1)^2-5(-1)-4

Answer 2

what do the 2 negatives mean

Answer 3

y²=(-1)²+5-4=1+5-4=2<=> y²=2 implies that y=-2 or y=2

Answer 4

sry y=sqrt(2) or -sqrt(2)

Answer 5

so its 2 or -2

Answer 6

no sqrt(2) or -sqrt(2)

Answer 7

its not sqrt

Answer 8

linear to quadratic

Answer 9

y=2,-2

Answer 10

y.y or just y ?

Answer 11

just y

Answer 12

ok then y=2 or y=-2

Answer 13

its a chart so x=-1

Answer 14

you plug it in and somehow get y

Answer 15

can anybody help me

Answer 16

y=0