Writing Equations
This or That!
ENLARGEMENTS
REDUCTIONS
RANDOM
100
A cell phone company charges you $30 a month plus $0.03 per text. What is the equation for this scenario?
y = .03x + 30
100
Proportional or Not.... A car that travels 4 miles in 5 minutes and A truck that travels 10 miles in 12 minutes
No Proportional!
100
WHICH SCALE FACTORS WOULD ENLARGE A FIGURE? 2, 0.5, 1.5, 0.75, 100
What is 2, 1.5, AND 100
100
WHICH SCALE FACTORS (r-values) WOULD REDUCE A FIGURE? 2, 1.5, 0.75, 0.9, 1/2
What is 0.75, 0.9, and 1/2
100
Which number is larger.... 2.9 or sq. root of 10
sq. root of 10
200
You are going on a vacation! The hotel charges you $65 per day. What is the equation for this scenario?
y = 65x
200
Proportional or not... Sally spends 45 minutes on her 9 awesome math problems. and Timothy spends 30 minutes on his 6 awesome math problems.
PROPORTIONAL!!!
200
NAME THREE SCALE FACTORS THAT WOULD ENLARGE A FIGURE DURING A DILATION.
What is ANY NUMBER GREATER THAN 1
200
NAME ANY SCALE FACTOR THAT WOULD REDUCE A FIGURE DURING A DILATION.
What is ANY NUMBER LESS THAN 1
200
How many degrees are in a triangle?
180
300
You need to get your car fixed! The shop charges you a $50 diagnostic fee and then $20 per hour. What is the equation for this scenario?
y=20x+50
300
You can use this to determine is the graph of something is a function or not.
Vertical line test
300
DOES THE SHAPE OF A FIGURE EVER CHANGE WHEN WE ENLARGE A FIGURE?
What is NO!!!! ONLY THE SIZE.
300
DOES THE SHAPE OF A FIGURE EVER CHANGE WHEN WE REDUCE A FIGURE?
What is NO!!! ONLY THE SIZE.
300
What integer is nearest to the square root of 50
7
400
The temperature outside started at 41 degrees this morning. It decreased 1.5 degrees every hour since. What is the equation for this scenario?
y = 41 - 1.5x
400
Function or not... (3,3), (4,5), (5,7), (5,9), (6,5)
NOT A FUNCTION!
400
IF A SQUARE HAS SIDE LENGTHS 10cm AND IS ENLARGED BY A SCALE FACTOR OF 5, HOW LARGE ARE THE NEW SIDE LENGTHS?
What is 50cm
400
IF A SQUARE HAS SIDE LENGTHS 100cm AND IS REDUCED BY A SCALE FACTOR OF 1/4, HOW LARGE ARE THE NEW SIDE LENGTHS?
What is 25cm.
400
Put the following in order from least to greatest: 32.5%, 0.31, 35%, 1/3, 1/4
1/4, .31, 32.5%, 1/3, 35%
500
2 consecutive numbers equal the same initial number minus 13. What equation would solve this riddle?
x + (x + 1) = x - 13
500
True or False... The graph of a line has to go through the origin (0,0) to be proportional.
TRUE!
500
IF A SQUARE HAS AN AREA OF 25cm squared, AND IS ENLARGED BY A SCALE FACTOR OF 2, WHAT IS THE NEW AREA.
What is 100 cm squared.
500
IF A SQUARE HAS AN AREA OF 100cm squared AND IS REDUCED BY A SCALE FACTOR OF 1/2, WHAT IS THE NEW AREA OF THE SQUARE? DRAW AND LABEL!!!
What is 25cm squared
500
How many times a day is a broken clock correct?
twice!
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