1) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. (hint: you need to find the “k” value)

X Y
4 10
10 25
16 40

2) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. (Hint: you need to find the “k” value)

X Y
20 2
30 10
40 18

Question

1) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. (hint: you need to find the “k” value)
 
X	Y	   
4	10	   
10	25	   
16	40	 

2) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. (Hint: you need to find the “k” value)
 
X	Y	   
20	2	   
30	10	   
40	18

anonymous · Answer

3) Write the equation of a line in slope-intercept form that has a slope of −3 and passes through the point (−2,1).





4) A 3-mile cab ride costs $5.75. A 5-mile cab ride costs $8.25.  
Part1: Find a linear equation that models the cost c as a function of the distance d.   (Hint: Create a table with data points and use the data from the table to write the equation.)  
Part 2: How much will a 10-mile cab ride cost?