Is (-3,11) a solution of y > -x+8

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

On a piece of paper graph f(x)=5•(0.4)^x

What is the first step of an indirect proof of a number that is divisible by two