Answer:
a) -6/2
b) -9/2
Step-by-step explanation:
a) rearrange by making y the subject as y = mx+c
 y = -6/2x-9/2 
 
the gradient = -6/2
b) c is the y-intercept as it touch the y-axis, therefore -9/2 is where the line crosses the y-axis
 
        
             
        
        
        
Answer:
I hope it helps .in case you don't understand any part ,feel free to ask.
 
        
             
        
        
        
Answer:
The linear speed in which Darlene is traveling is 24.74 miles per hour. 
Step-by-step explanation:
The wheel experiments rolling, which is a combination of translation and rotation. The point where linear speed happens is located at geometrical center of the wheel and instantaneous center of rotation is located at the point of contact between wheel and ground. The linear speed ( ), measured in inches per second, is defined by following expression:
), measured in inches per second, is defined by following expression:
 (1)
 (1)
Where:
 - Radius of the wheel, measured in inches.
 - Radius of the wheel, measured in inches.
 - Angular speed, measured in radians per second.
 - Angular speed, measured in radians per second.
If we know that  and
 and  , then the linear speed, measured in miles per hour, in which Darlene is traveling is:
, then the linear speed, measured in miles per hour, in which Darlene is traveling is:


The linear speed in which Darlene is traveling is 24.74 miles per hour. 
 
        
             
        
        
        
Answer:
23 11/12 yards or 23.9166 yards
Step-by-step explanation:
2/3 of 100 yard race is equivalent to 66 2/3 yards. Tge difference between the above and 42 3/4 yards covered by tortoise will be
66 2/3- 42 3/4= 23 11/12 yards or 23.91666 yards