Answer:
B
Step-by-step explanation:
A proportional relationship is represented by linear function with its linear parameter "b" equal to zero. Since b is equal to zero, the line passes through the origin and the function/relation is proportional.
To verify that we divide the y coordinate over the x coordinate we obtain a constant called k, which is the slope.
For instance:
According to this function we can easily check a proportional relationship among its points:
Q = Number of weeks x Pounds of aluminum per week.
q = 6 x 3 1/3 = 20 pound of aluminum
Answer:
Never
Step-by-step explanation:
If the slope is the same and the y-intercept is the same
They are the same line
2x + 5 = y is the same as 2x +5 = y