6. What is the missing coefficient in the following chemical equation?
?NO + O2 = 2NO2?

a. 0
b. 1
c. 2
d. 4

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

Find x to the nearest hundredth place

Solve the system of equations. x=-2y+1 and x+2y=9. show work