linear function has a constant rate of change, and any two rows of the shown table can be used to calculate this rate. From the first row to the second, the value of x is increased by 2 and the value of f(x) is increased by 6=4−(−2).So the values of f(x) increase by 3 for every increase by 1 in the value of x. Since f(2)=4, it follows that f(2+1)=4+3=7.Therefore, f(3)=7.Choice A is incorrect. This is the third x-value in the table, notf(3). Choices C and D are incorrect and may result from errors when calculating the function’s rate of change.