Can someone

use elimination to solve for x and y:

−2x−y=9

2x−9y=1

my choices

a. (−4,−1)
b. (−1,−4)
c. (5,1)
d. (−1,−7)

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Someone me what is the area of this figure? 18m 18m 8m 16m