Use a number line to find the difference-6.5 - 2

The answer would be -8.5

Step-by-step explanation:

If you start at -6.5, to find the difference (subtract) you would move left two whole spaces to get to -8.5.

On the other hand, if you were to start at 6.5 and subtract 2, your answer would be 4.5.

It depends if your first number is negative or positive.

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation: