N and 8 in an algebraic expression would be N/8 hope this helps you.
The one that doesn't have an "x" repeated, that is an X-REPEAT
notice, the pair is just an x,y pair.. .so if the "x" is repeated, is NOT a function
let's see
If there is no other context, you could use the points (0,0) and (3,-5) because you move down 5 and to the right 3.
You can use this equation to find the axis of symmetry or the vertex of the quadratic equation as long as it is in standard form
X= (-b/2a)
The answer is x=2