Answer D). 9 ft is correct
Height of the ball at a horizontal distance of 10 feet is 9 ft 
Step-by-step explanation:
A ball is thrown and it follows a parabolic path. At each horizontal distance (x) the following equation models the ball’s height (y). 
Y(x) = 
Question asked is " What will be height (Y) of the ball when X=10 ft " 
Simply putting value of X in given equation
we get,
Y(x) = 
Y(x) = 
Y(x) = 
Y(x) = 
Y(x) = 
<em>Therefore,</em> Height of the ball at a horizontal distance of 10 feet is 9 ft 
Answer D.  9 ft is correct
 
        
             
        
        
        
A. Linear y= -x - 1 would be the answer
        
             
        
        
        
Answer:
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Step-by-step explanation:
 
        
                    
             
        
        
        
name the points 
a=(x1,y1) b=(x2,y2)
a=(6,8) b=(9,10)
use the slope formula

replace

answer= The slope is equal to 2/3
a=(9,10) b=(6,8)
using the formula

slope will also be 2/3
 
        
             
        
        
        
Answer:
first one is A  and the second one is B.
Step-by-step explanation: