A company rents riding equipment for a fixed amount plus a fee based on the number of days for which the equipment is rented. The table shows the total charges, y, in dollars, of renting riding equipment for x number of days: Riding Equipment Rentals Number of days (x) Total Charges in dollars (y) 0 6 1 16 2 26 What is the fixed amount charged?
can someone help
the fixed amount is the value of y when x = 0
so would the answer be 6
yes
can you help me with another one
sure
ok thanks
Barney wants to rent a tent. He has to pay a fixed base cost plus a daily rate for renting the tent. The table shows the amount of money, y, in dollars, that Barney has to pay for renting the tent for x days: Tent Rental Number of days (x) Rent (dollars) (y) 0 3 1 8 2 13 3 18 4 23 Which equation best shows the relationship between x and y? y = 5x + 3 y = x + 8 y = 5x + 8 y = x + 3
your equation will be in the form y = mx + b let's find m first. when x increases by 1, what value does y increase by?
i don't know what m would be
do you see the pattern in the y values in the table?
i can find the pattern
every y value increases by a certain number each time, what is that number?
it goes up by 5
great, so that means our m value (slope) is 5 so right now we have y = 5x + b, now let's find b b is the y value when x = 0, so what is b?
would it be 1/5
m = 5, since y increases by 5 every time x increases by 1 right now, we have y = 5x + b, now we need to find b b is the y value when x = 0, so what is b?
i don't know what be would be
what is the value of y when x = 0?
3
ohh yea i forgot that b was the y intersect my bad
right, so b = 3 putting everything together: y = mx + b = 5x + 3 and that's our answer
ok thank you sooooooooo much
Join our real-time social learning platform and learn together with your friends!