Functions
Which function is linear?
a.) y = 1/x + 7
b.) y = x^2 - 2
c.) y = 7x - x^2
d.) y = 2/3x - 7
d.) y = 2/3x - 7
Consider the values.
Sqrt 5, -3/4, 4.1, Sqrt 81
Which value(s) is (are) irrational?
Sqrt 5
The side length of triangle JKL are 60cm, 80cm, and 100cm.
Which formula can be used to show that triangle is a right triangle?
a. 60^2 + 100^2 = 80^2
b. 60^2 + 80^2 = 100^2
c. 60^2 - 80^2 = 100^2
d. 80^2 - 60^2 = 100^2
b. 60^2 + 80^2 = 100^2
The Kuiper Belt is estimated to be about 3,000,000 meters wide. Which value represents the estimated width of the Kuiper Belt, in meters, in scientific notation?
a. 3.0 x 10^-6 meter
b. 30 x 10-5 meter
c. 30 x 10^5 meter
d. 3.0 x 10^6 meter
d. 3.0 x 10^6 meter
In a linear scatter plot, which best describes an outlier?
a. a point that is close to the line-of best fit relative to the majority of the points
b. a point that is far from the line-of-best fit relative to the majority of the points
c. the initial point in the scatter plot
d. the final point in the scatter plot
b. a point that is far from the line-of best fit relative to the majority of the points
Which equation of a line contains these ordered pairs?
{(-2,5), (0,1), (2,-3)}
a.) y = x + 7
b.) y = -x + 3
c.) y = 2x + 9
d.) y = -2x + 1
d.) y = -2x+1
Which fraction is equivalent to 0.45?
9/20
What is the value of the Triangle Sum Measure?
180 degrees
Four number are written below.
1.8 x 10^7 1.9 x 10^6
1.8 x 10^-7 1.9 x 10^-6
Which number has the least value?
1.8 x 10^-7
Edward is collecting data comparing the number of calories burned to amount of time, in minutes, spent jogging.
When Edward draws his scatter plot, which variable should be used as the independent variable?
a. minutes spent jogging
b. number of calories burned
c. distance travelled
d. outdoor temperature
a. minutes spent jogging
John's monthly cell phone bill can be described by the linear function C(t) = 0.10t + 39.99, where c(t) represents the cell phone bill and t represents each text message sent and received.
What would the slope represent?
a. Cost of the bill b. Cost of each text
c. Cost of all phone calls d. Cost for all cell phone
b. Cost of each text
Which number is an element in the set of irrational numbers?
Sqrt 100, -2.13, Sqrt 10, 13.07
Sqrt 10
If (4x + 10) and (2x + 5) are supplementary angles, what is the value for x.
x = 27.5
Marcus works at a vegetable stand after school. The data shows his earnings from three shifts he worked last week. Amina gets paid $11 per hour as a server at a local restaurant.
Who earns more per hour, and what is his or her pay rate?
a. Marcus earns more per hour at $11.00 per hour.
b. Marcus earns more per hour at $11.50 per hour.
c. Amina earns more per hour at $11.00 per hour.
d. Amina earns more per hour at $11.50 per hour.
b. Marcus earns more per hour at $11.50 per hour.
Researchers conduct a study and use the equation h=0.2d + 0.4 to model the height, h, in inches, of bean plants after d days. Which statement about the slope is true?
a. Every 0.2 day the bean plant grows an average of 1 inch per day.
b. Every 0.4 day the bean plant grows an average of 1 inch per day.
c. Every day the bean plant grows an average of 0.2 inch per day .
d. Every day the bean plant grows an average of 0.4 inch per day.
c. Every day the bean plant grows an average of 0.2 inch per day.
Use the data in the table to answer the answer the question.
x| 4| 5| 6| 7 | 8
Y| 7| 9| 11| 13| 15
When graphed, which choice represents the equation of this line?
a. y = 2x - 1 b. y = .25x + 6
c. y = 1.25x + 2 d. y = -25x + 8
a. y = 2x - 1
Between which two numbers does Sqrt 150 lie?
a.) 10 and 11
b.) 11 and 12
c.) 12 and 13
d.) 13 and 14
c.) 12 and 13
A figure with coordinates A(2,3), B(4,5), C(-3,0), D(-6,6) is dilated by a scale factor of 3 with the origin as the center of dilation. Fill in the coordinates of A' of the figure after dilation.
A' = (__, __)
A'(6 , 9)
Frances is a baker who sells bread and falafels. He loaves of bread sell for $2.40 each. She sells a customer 5 falafels for $11.75.
Which is cheaper, 1 load of bread or 1 falafel, and how much does it cost?
a. One falafel is cheaper and cost $2.40 each.
b. One falafel is cheaper and cost $2.35 each.
c. One loaf of bread is cheaper and costs $2.40 each.
d. One loaf of bread is cheaper and cost $2.35 each.
b. One falafel is cheaper and cost $2.35 each.
If the equation of a line-of-best fir is y = -3x +4, what must be true about the scatter plot?
a. It has no correlation.
b. It has a negative correlation.
c. It has a positive correlation.
d. It cannot be determined
b. It has a negative correlation.
Study the two functions in the tables.
Function 1 x| 1| 2| 3| 4
y| 5| 7| 9| 11
Function 2 x| 1 | 2 | 3 | 4
y| -7 | 7 | -7 | 7
Which function(s) is (are) linear?
a. Function 1 only b. Function 2 only
c. Function 1 and 2 d. neither Function 1 nor 2
c. Function 1 and 2
Four students find the values in the tables on a number line.
Anson => Sqrt 7 Claudia => Sqrt 60
Beth => Sqrt 35 Daniel => Sqrt 83
Which student's value is between 6 and 8 on the number line?
Claudia => Sqrt 60
Fatima has several sticks, whose length are recorded in the set.
10in., 5in., 4in. 8in., 6in
She wants to use three of them to make a right triangle. Which three should she choose, and why?
a. 4in., 6in., and 10in., because 4 + 6 = 10
b. 4in., 5in., and 6in., because these are the three shortest sticks
c. 6in., 8in., and 10in., because 6^2 + 8^2 = 10^2
d. 5in., 6in., and 8in., because 5^2 +6^2<8^2
c. 6in., 8in. and 10in., because 6^2 + 8^2 = 10^2
What value for x will make the equation
-3x + 1 = 2(4x - 5) true?
a. -2
b. 0
c. 1
d. 3
c. 1
A student buys 1 ticket for a movie and then buys x snacks. The equation y = 2.50x + 8.75 represents the total amount of money the student spends, y.
Which statement is true?
a. Every snack cost $2.50.
b. Each movie ticket costs $2.50.
c. The student spends $11.75 total for 1 movie ticket and 1 snack.
d. The student spends $12.50 total for 1 movie ticket and 2 snacks.
a. Each snack cost $2.50.