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. how will the graph change if the cost per audio book goes up by $1.00?

The y intercept would remain the same but the slope would increase .

Step-by-step 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

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.