Answer:
y intercept is 18
Step-by-step explanation:
It is given that
Monthly rent for phone service = $18
charges for each long distance minute = $ 0.07
Let us assume number of minutes used = x
also let us represent total cost by y
So the total cost = ( charges per minute )(number of minutes) + monthly rent
now we compare this equation with y=mx+b
where m is the slope and b is y intercept
so we have b= 18
hence y intercept is 18