Find a intersection b.
a: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
b: {-2, -1, 1, 4, 7, 11}
multiply choice:
a. {-2,-1,1,2,3,4,5,67,8,9,10,11}
b. {1,4,7,11}
c. {-2,-1,1,2,3,4,5,6}
d. {}

Is this a polynomial function? i need to know asap

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

Plzzz answer both questions and i will give you 100 points