Posted by Lucy on .
Use two ordered pairs to write a prediction equation. Then using your prediction equation to predict the number of comic books sold when the price is $4.50.
The table is as follows:
Price$2.00 # sold was 16
$2.50 13
$2.75 12
$3.00 10
$3.50 7
I used (2.00,16) & (3.00, 10) to get the prediction equation y=6x + 4 but do not know how to solve for the # of books sold when the price is $4.50.

Algebra II 
Lucy,
OOPSprediction equation is y= 6x+24

Algebra II 
drwls,
The relationship between price and number sold is not quite linear. If you choose prices of = = 2.50 and 3.50 to get a prediction equation, the straightline fit would be
y = 28  6x
Then if x = 4.50, the number sold is
y = 28  27 = 1