Slope Intercept Form
An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. Assume the plane continues at the same rate of descent. Use the equation y = 30,000 - 2,000x to find the altitude of the plane after 5 minutes.
$20,000
Marty is spending money at the average rate $3 per day. After 14 days he has $38 left. Use the equation y - 38 = -3 (x - 14) to find the amount of money he began with?
$80
T-shirts at a flea market cost $4.50 each and shorts cost $6 each. You have $108. Using the equation 4.50x + 6y = 108, If you buy exactly 12 t-shirts, how many shorts can you buy?
9 shorts
Nick is given $50 to spend on vacation. He decides to spend $5 a day. Use the equation y = 50 - 5x to find out when Nick will have $15 left.
7 days
While on vacation in Washington DC, the cab ride for the Dulles airport to the hotel is 15 miles. The total cost of the cab ride was $25.50. The cabbie charges $1.50 per mile for the entire trip. Use the equation y - 25.50 = 1.50(x - 15) to find the cost to travel 7 miles in a cab.
$13.50
The admission fee at a small fair is $1.50 for children and $4.00 for adults. On a certain day $5050 is collected. If 1500 children attended the fair, how many adults attended? Use the equation 1.50x + 4.00y = 5050.
700 adults
You are visiting Baltimore, MD and a taxi company charges a flat fee of $3.00 for using the taxi and $0.75 per mile. Use the equation y = 3.00 + 0.75x to find how many miles the taxi traveled for a cost of $15.
16 miles
An internet service provider charges $18 per month plus an initial set-up fee. One customer paid a total of $81 after 2 months of service. Use the equation y - 81 = 18(x -2) to find the amount it costs after 5 months?
$135
A landscaping company sells 13 bushes and 4 trees for $616. If trees cost $63, how much do bushels cost? Use the equation 13x + 4y = 616
$28
A plumber charges $50 to make a house call. He also charges $25.00 per hour for labor. Use the equation y = 50 + 25x to find the number of hours worked, given a bill for $162.50.
4.5 Hours
Your gym membership costs $33 per month after an initial membership fee. You paid a total of $228 after 6 months. Use the equation y - 228 = 33 (x - 6) to find the total cost after 9 months.
$327
Students rented buses and vans to go attend the Southwood Staff/Student Hockey Game.There were 8 vans and 12 buses for the 360 students. If there were 12 students per van, how many students fit in each bus? Use the equation 8x + 12y = 360
22 students