Answer:
The y intercept would remain the same but the slope would increase .
Explanation:
An audio books club charges an initial joining fee of $15.00. The cost per audio book is $12.00. The graph shows the cost of belonging to the club as a function of audio books purchased.
The graph is drawn with number of audio books along x axis and the total charges along y axis.
The equation is : y = 12x + 15
Now we are going to increase the cost of audio book by $1.00
Then the total charge would also increase.The y intercept would remain the same but the slope would increase .
The new equation is : y = 13x + 15