A is the answer have a nice day
They are parallel when the slopes are the same
example:
y=2x+3
y=2x-5
Complete Question
A measurement template with a historical value of 25.500 mm is measured 27 times and a mean value of 25.301 mm is recorded. What is the percent bias when the tolerance is +/- 0.3?
Answer:
The percent bias is
Step-by-step explanation:
From the question we are told that
The historical value is 
The number of times it is measured is n = 7
The mean value is 
The tolerance is 
Generally the percent bias is mathematically represented as

=> 
=>
The equation for Direct Variation is y =kx, where k is the constant, so the constant being multiplied by x is (1/6). This means that k = (1/6).