Question

For each function, determine whether y varies directly with x. If so, find the constant of variation and write the function rule.

1. x: -2, 1, 2
y: 3, 4, 7

2. x: 4, 6, 10
y: 5, 9, 17

3. x: 1, 2, 5
y: 1, 2, 5

Answer 1

3. directly varies with constant k=1...