Answer:
5
Step-by-step explanation:
It is 5 because no matter how many stamps he sells, he has $5.
Answer:
The y-intercept of Ben's graph is [tex]y = 5[/tex].
Step-by-step explanation:
The function for Ben's amount of money y, depending on the number of stamps sold x, is as follows:
[tex]y = ax + b[/tex]
In which a is the price of each stamp and b is his initial money.
Building the function:
Ben has $5. This means that if he sells no stamps, he is still going to have $5. So [tex]b = 5[/tex].
For each stamp sold, he gains $3. So if sells 1 stamp, he will have $8, if he sells 2, he will have $11. So [tex]a = 3[/tex].
The function is:
[tex]y = 3x + 5[/tex]
Which will be the y-intercept of Ben's graph?
This is the value of y when x = 0.
So
[tex]y = 3*0 + 5 = 5[/tex]
The y-intercept of Ben's graph is [tex]y = 5[/tex].
