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Chapters 2, 3, & 4
Equations in One Variable
Equations in 2 Variables
Simultaneous Equations
Exponents
100
The sum of -20 and -18.
What is -38.
100
Solve for x: 10 + 5x = 21
x = 2.2
100
The slope of the line: y=7/2x+17
What is 7/2?
100
How many solutions do these simultaneous equations have? 3x - 2 = 10 3x + 6 = 17
One.
100
2^5 x 2^6
What is 2^11
200
The quotient of -60 and 15.
What is -4.
200
Solve for x: 10x + 5 = 2x + (9 x 3 +2)
x = 3.
200
Where does y+4x=0 cross the y axis?
The origin: (0,0)
200
These types of equations are parallel lines and have no solution.
What are inconsistent equations.
200
The product of 5 x 10^15 and 7 x 10^-3 written in scientific notation.
What is 3.5 x 10^13
300
True or False: If one variable in a direct variation is tripled, then so is the other
What is TRUE.
300
Solve 6x-y=1 for x
What is x=(y+1)/6
300
If the formula for volume of a rectangular prism is v=lwh, what equation do you get if you solve the formula for w?
w=v/lh
300
Write a set of simultaneous equations that are inconsistent.
Answers vary
300
Written as a power of 5, 1/125 is...
5^-3
400
The time that it takes Kermit to drive to Hollywood is a function of the speed at which he drives. Here is a table for this function: x (speed in mph): 30, 60, 80 y (time in hrs) : 8, 4, 3 Write a formula for the function and tell what kind of function it is.
What is: xy=240 or y=240/x Inverse Variation
400
Solve for x: 2(x+4)=(x-5)-9
x= -22
400
Write the following equation in slope-intercept form: 3(x+2y)+2=14
y=-1/2x+2
400
Solve this pair of simultaneous equations: x + 3y = 19 2x + y = 3
(-2, 7)
400
(4 x 10^5)/(5 x 10^-2) in scientific notation.
What is 8 x 10^6
500
True or False: If the graph of a function is a curved line, it is an inverse variation.
What is FALSE.
500
A cat spotted a mouse 21 ft. away and decided to chase it at 6 ft per second. At the same instant, the mouse ran away from the cat at a rate of 3 ft. per second. How far did the cat run?
42 ft.
500
Write the equation of a line that passes through the point (-2, 5) and has a slope of -2.
y=-2x+1
500
On a fishing trip, Huckleberry Finn caught 31 fish, some of which were bullheads averaging 1.5 pounds each and the rest of which were catfish averaging 5 pounds each. The entire catch weighed 92 pounds. How many fish of each kind did he catch?
Bullheads: 18 Catfish: 13
500
2a^2 (4a^-2 b^3)^-3
a^8/32b^9