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Convert to Slope-Intercept Form
Make an Equation/Inequality
Direct Variation
Slope
Domain and Range
100
Convert to Slope-Intercept form x+y=1
y=-x+1 or y=1-x
100
Mr. Cassidy is having a fundraiser. The number of energy drinks sold was 4 more than 3 times the number of bags of chips. Mr. Cassidy sold a total of 52 energy drinks AND bags of chips. How many bags of chips were sold? A. 31 B. 12 C. 36 D. 40
B.
100
Y varies directly with X. When X=5, Y=20. What is k, the constant of variation?
20/5=4 k=4
100
Slope measures what attribute of a line?
Steepness of a line
100
What is domain?
The list of all possible x-values in a relation.
200
4x-2y=62
y=2x-31 or y=-31=2x
200
The perimeter of a rectangle is 64 inches. The length of the rectangle can be represented by (x+7) and its width can be represented by (2x-3). Write an equation to find x. (Hint:Draw a picture)
6x+8=64
200
Is this an example of direct variation: y=49x-2?
NO!!!
200
What is the slope of the line y=4-10x?
m=-10
200
What is the range of a function?
A list of all possible y values of the function.
300
In slope-intercept form, what does the letter b stand for?
Y-intercept
300
A plumber charges a service call fee of $40 dollars plus an hourly labor rate of $28. Write an equation showing the relationship between y, the total cost of the service, and h, the number of hours.
y=28h+40 or y=40+28h
300
The value of y varies directly with x. Write an equation that represents the relationship between x and y if y=20 when x=80.
y=(1/4)x or y=.25x
300
What is true about these two lines? Y=4x+3 and 12x-4x=18 A. These equations represent the same line B. These equations represent lines that intersect. C. These equations represent parallel lines. D. None of the Above
C.
300
What is the domain of the following set of ordered pairs? {(2,9), (-3,-8), (1,7)}
D:{2,-3,1}
400
9x+(1/3)y=1
y=-27x+3 or y=3-27x
400
Janet has $30 to spend on dinner. She needs to pay a 7% sales tax and leave a 20% tip. Which inequality represents this situation? A. d+0.07d +0.2d >=30 B. d+0.07d +0.2d <=30 C. .27d>30 D. .27<30
B. d+0.07d+0.2d<=30
400
What is true about the y-intercept of a direct variation?
The y-intercept of a direct variation is equal to 0.
400
What is the slope of a line that passes through the points (3,9) and (6, -18)?
m=-9
400
When recording the range of a discrete function, would I use a list or an inequality?
List
500
5x-(3/4)y=9
y=(20/3)x-12 or y=-12+(20/3)x
500
Doreen has started a part-time business making and selling bird feeders. Her equipment cost her $75. If she sells her bird feeders for $6 each, how many must she sell to earn a profit of over $135. Write an inequality and solve for b, the number of bird houses sold.
135<6b-75 and b>35 bird houses
500
If y varies directly with x and y=90 when x=40, write the equation that represents this relationship.
y=(9/4)x
500
What is the slope of the line passing through the points, (9,8) and (20,8)
m=0
500
What is the domain of the function y=3x+2
All real numbers.