Home rentals
greenville decatur fayetteville centerpoint
$980 $1,020 $560 $875
$750 $850 $950 $560
$690 $550 $1,100 $695
$830 $660 $875 $1200
$885 $1,000 $750 $825
$830 $750 $650 $700
maria is looking for a place to move. she has narrowed it down to 4 towns: greenville, decatur, fayetteville, and centerpoint. she wants to live where the median rental for a house is the lowest. where should she live?

no pictures of the graph

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