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How do i do this? i don’t understand

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.