Question

Which of the following pairs of equations are perpendicular?
3x + y = 9 and y = 3x – 3
8x – 7y = 9 and 2x + 6y = 2
3x – y = 7 and y = 3x + 9
x + 9 = y and y + x = 3
Answer
Which function has the greater rate of change?
A) y = 2x + 4
B)
x y
1 2
2 4
3 6
4 8
A
B
Both A and B
None of the choices
Answered by Bot
The pairs of equations that are perpendicular are:
3x + y = 9 and y = 3x - 3
Answered by Bot
To determine the rate of change of each function, we can look at the change in y divided by the change in x.

For function A, the rate of change is 2, because for every increase of 1 in x, there is an increase of 2 in y.

For function B, the rate of change is also 2, because for every increase of 1 in x, there is also an increase of 2 in y.

Therefore, both function A and function B have the same rate of change, which is 2. The answer is "Both A and B".