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Definitions
Word Problems
Write an Equation
The Steps
Find the Slope
100
The point on the y-axis
What is the y-intercept?
100
You drive into the distance with your Valentine in your new Ferrari. So far you've already gone 50 miles, and the speed limit is 80 MPH. If x represents the number of hours you travel with your lover, write an equation to find out how many miles you will travel in two hours.
What is y= 80x+50 ANSWER- 210 mi
100
slope: 6, y-intercept: -7
What is y= 6x+ -7
100
Name this step when graphing linear equations. Look at the top number of your slope to know how many to rise.
What is step 2?
100
(8,10) and (3,6)
What is -4/-5
200
The variable that represents the rate of change
What is m?
200
Timmy is always losing his money. At the beginning of the week his parents gave him $60 for his allowance. He lost $5 per day. Write an equation, and find how much money Timmy lost by the end of the week.
What is y=5x-60 ANSWER: $-25
200
slope: 30, y-intercept: 60
What is y=30x+60
200
Name this step when graphing linear equations. Plot this point and connect them.
What is step 4
200
(12,5) and (13,2)
What is 3/1 or 3
300
The variable that represents the y-intercept
What is b?
300
Rebecca, who is addicted to texting, has a cell phone plan of $40 each month. Each text she sends is $0.50. If x represent the number of texts she sends, what is her total monthly bill if she sends 50,000 texts, write an equation
What is y=.50x+40 ANSWER: 25,040 texts
300
slope: -6, y-intercept: 2
What is y=-6x+2
300
Explain the steps of similar triangles and slopes.
What is plot the same equation from the previous point plotted on the graph?
300
(10,7) and (15, 10)
What is 3/-5
400
The term for rate of change when graphing a linear function
What is slope or rise over run or change in y over change in x
400
A video game rental shop charges $20 for a rental card plus $4 per rental. Write an equation for this situation.
What is y=4x+20
400
slope: 70, y-intercept: 100
What is y=70x+100
400
Name this step when graphing linear equations. Plot the y-intercept on the y-axis.
What is step 1
400
(20,14) and (6, 17
What is 3/-14
500
the art of plotting two different points on a line that makes a triangle, and can be done with different points; but all points must have the same rate of change
What is similar triangles and slope?
500
An airplane is at an altitude of 30,000 feet and descends at a rate of 400 feet per mile. Write the equation for this problem, and find out how many feet the airplane descends to when 30 miles have been surpassed.
What is y=400x-30,000 ANSWER: -18,000
500
slope: 800,800, y-intercept: -600,600
What is y= 800,800x-600,600
500
Name this step when graphing linear equations. Look at the bottom number of your slope to know how many to run.
What is step 3?
500
(160,80) and (120, 60)
What is -40/-40 or 1