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Linear Equations
Potpourri
Finding Slope
Solve for X
Vocabulary
100
Ms. Woodall get in a taxi. Its initial cost is $2.50. She is charged $0.80 for every mile. Write a linear equation.
What is y = $0.80x + $2.50.
100
In the formula y = mx+b, b represents?
What is y intercept
100
y = 5x + 10. What is slope?
What is 5.
100
300 = 50x + 100. Solve for x.
What is x = 4.
100
Rise over run.
What is the formula for finding slope.
200
Julia is a retail worker. She earns $50 a day plus $15 for every sale she makes. Write a linear equation for how much she earns in one day.
What is y = 15x + 50
200
In the formula y=mx + b, m represents?
What is slope!
200
rise equal 8, run equals 2. Find slope.
What is 4.
200
75 = 20x + 15. Solve for x.
What is x = 3
200
The constant rate of change
What is slope?
300
Alejandro begins with 30 gallons of gas in the tank. He loses 2 gallons of gas for every mile he drives. Write a linear equation.
What is y = -2x + 30
300
If the graph of an equation is a straight horizontal line, the slope is...
What is 0
300
point a (3,5) point b is (5,11). Find slope.
What is 3.
300
86 = 30x - 4. Solve for x.
What is x = 3.
300
a linear function that decrease from left to right.
What is negative slope
400
If y intercept is 2 and point a is (1,5) and point b is (2,8). What is the linear equation?
What is y = 3x + 2
400
The formula for finding slope.
What is y2 - y1 over x2 - x1
400
point a is (2,-6) point b is (3, -8). Find slope.
What is -2.
400
- 5 = 3x - 20. Solve for x.
What is x = 5.
400
a linear function that increases from left to right.
What is positive slope?
500
if point a is (0,3) point b is (4, 5) and point c is (8,7)
What is y = 1/2x + 3
500
Mr Peterson grew 8 inches between the ages of 13 and 20. He remained the same height between 20 and 72 years old. Between 72 and 95 years old he shrunk 5 inches. Is this a linear function? Why or why not?
No, it is a non-linear function because there is not a constant rate of change.
500
(-2,2) (2, -4)
What is - 3/2
500
35 = 1/2x + 10. Solve for x.
What is x = 50.
500
where x equals 0 or where the line crosses the y axis.
What is y intercept