Which of the following sets represent invertible functions? Select all that apply. 1{(2,3), ( - 2,5), (2,6),(4,6), (5,2)}
2{(2,3).(-2,5), (3, 6), (4,8), (5,2)}
3{(2,3).(-2,5), (-3,6).(-4,7), (5, 4)}
4{(2,3), ( - 2,5), (3, 6), (4, 6), (5, 2)}

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c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2