The ordered pair below is a solution to which equation? (40, 5)
A. y = 8x
B. y = 5x
C. y = 1/8x
D. y = 1/5x

Question

The ordered pair below is a solution to which equation? (40, 5) 
A. y = 8x 
B. y = 5x 
C. y = 1/8x 
D. y = 1/5x

anonymous · Answer

C
Plug in 40 for the x value.  So you have 1/8 * 40/1 = 40/8 

$$40\div8= 5$$

anonymous · Answer

Find the equation of the line .

anonymous · Answer

Find the slope by dividing the raise over the run. 

m= (12-4)/(3-1) = 4

Take one of the points and plug into the slope intercept form y= mx + b 

For point (1,4) you get   4 = 4(1) + b

So b = 0

So the equation of the line is y = 4x + 0