What is the solution to the inequality? -2/3 (2x - 1/2)< = 1/5x - 1

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

Which of the following describes the symmetry of the graph of y = x3?