Choose a system of equations with the same solution as the following system: 6x + 2y = −6
3x − 4y = −18

a) 8x + 4y = −4
17x + 2y = −28

b)12x + 4y = 12
21x + 2y = −36

c) 6x + 8y = −36
15x + 6y = −60

d)6x + y = 15
15x − y = −9

What is the equation of the graph below? y=sec(x)-4

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !