Suppose the value of y and the value of a vary together at a constant rate of change (so that Ay = 0.5 A), and y = 1.5 when x = 3. a. We are given that y = 1.5 when 3. Plot a point on the graph to represent these values. = 8 y 7 6- S 4 3 2 1 X -2 1 2 3 4 5 6 7 8 Clear All Draw: Dot b. Suppose the value of x varies from x = 3 to x = 6.75. i. By how much did the value of z change? Ax=3.75 Preview ii. By how much did the value of y change over this interval of a? Ay= Preview Enter a mathematical expression [more..] c. What is the value of y when x = 6.75?