Steven determined that this data set is modeled well by y=-3/4x+8 which statement is true about the slope of the model
a. for every 3- unit increase in x, y increase by 4 units
b. for every 4- unit increase inx, in, increases by 3 units
c. for every 3- unit decrease in x, y increase by 4 units
d. for every 4- units decrease in x, y increase by 3 units ​