Question

If the rate of change of a function is 3, and the function passes through the points (0, -2) and (2, 4), what is the value of the function at x = 3? Option 1: -2 Option 2: 1 Option 3: 4 Option 4: 7

Answer 1

4 = 3(2) + b

4 = 6 + b

b = -2

y = 3x - 2

= 3(3) - 2

= 9 - 2 = 7

Option 4 is correct.