Calories
Excercise
What is Easiest?
The Methods
Knowledge
100

How many calories are in a Twinkie? Each Team Guesses, closest wins

135

100

How many calories do you burn running 1 mile?

100 calories

100

Which is the easiest line to graph

3x - 4y = 24

y = 4

y = (3x)/2 -2

y = 4

100

What are the three methods we have learned to find the intersection of a system of equations.

graphing, substitution, elimination

100

What is the fastest way to graph an equation in standard form?

x and y intercepts first
200

A hot dog has 150 calories, and riding a bike for an hour will burn 50 calories.

How many hours will you have to ride your bike if you eat 4 hotdogs.

12 Hours of bike riding

200

Each Snowball has 200 calories. Running uphill burns 140 calories an hour. If you eat 6 snowballs, how long will you have to run to burn through it?

8.5 hours

200

What would be the best approach to this problem?


5x -3y = 10

10x+3y = 20

Elimination
200

What are the three types of solutions we have for systems of equations.

1 solution, infinite solution, 0 solutions

200

What are we looking for when we solve systems of equations.


A point of intersection.

300

Solve this system of equations by graphing.

y = 4x+2

y= 3x

(-2,-6)

300

Why is graphing not always the best method to use to solve systems of equations?

Graphing has a lot of human error, requires a lot of time and to set up the graph very well.

400

Graph this system of equations by substitution.

y=(3x)/2-2

x=y

(4,4)

400

In which situation would you want to solve the system of equations by substitution

y = 4x+5

5x -15y =45


4x +8y = 16

32x +4y= 32


5x -10y = 20

4x + 8y = 12

first one

500

According to an Exercise Calorie Guide, a 120 pound person burns 372 calories hiking for an hour.  A 200 pound person burns 620 calories hiking for an hour.

Write a linear equation to model the relationship between weight and calories burned per hour.(X lbs, Y Cal)

y = 3.1x

or

248 -80y =0

500

Athlete Brad ate breakfast and began biking. The calories left from their meal is shown by the equation y=-50x+500

Athlete Alfred ate breakfast and began hiking. The calories left from their meal is shown by the equation y=-150x +600

When do the athletes have the same amount of calories left from breakfast?

1 hour 450 calories left

500

What is easier. Doing homework and asking questions in class, or retaking the class 2-3 times.

zzz

500

Solve this system of equations by elimination.

12x + 3y = 12

4x +y =4

infinite solutions

500
After using elimination you have 14=13. What does this mean?


After using substitution you have 4=4. What does this mean?


No solution and Infinite Solution
M
e
n
u