Simplify
Linear
Linear Systems
Random
Function
100
Simplify the following expression:
1/3 - 5/6
-1/2
100
Is y=x2 linear? Explain.
No because it has an exponent other than 1 and is not in the form y=mx+b
100
Find the solution of the system
y=2x - 5
y=3x - 5
(0,-5)
100
These ordered pairs do not form a function. What is a possible value for x?
(1, 3) (2, -5) (4.5, -5) (5, 10) (x, 6)
1, 2, 4.5, or 5
100
True or False
Each x can have more than one y in a function
False
Each input can have one and only output in a function.
200
Simplify the following expression:
-3(-2x + 5) - 4
6x - 19
200
What is the slope of y = 2/3x -5
y=mx+b; m is slope
y=2/3x - 5
m=2/3
200
What is the solution of a system with 2 parallel lines?
There is no solution because parallel lines do not intersect
200
Describe the series of transformations proving congruence.
The triangle was reflected over the y axis and then reflected over the x axis.
200
True or False
The following coordinates make up a function.
(1, 3), (2, 3), (3, 3), (4,3)
True
Each x has one and only one y. The y's can be the same. This is a horizontal line and passes the vertical line test.
300
81
300
Function A is y=3x - 5
Function B is a line through (0,2) and (2,4)
Which has the greater rate of change?
Function A
300
Find the solution to the following system of equations.
2x + y = 6
y = -2x - 8
No solution
When written in y=mx+b form, 2x+y=6 becomes y=-2x + 6
300
Solve
2x - 5 = 3x + 6
x=-11
300
Is this a function?
Yes. It passes the vertical line test.
400
45
400
A line passes through the point (-5,0) and has a y-intercept of (0,2). What is the slope?
Change in y's (Rise) = 2-0 =2
Change in x's (Run) = 0 - (-5) =5
Slope = m = Rise/Run = 2/5
400
Solve the system with 2x = y and x + y = 9
a.) (4,8)
b.) (1, 2)
c.) (3, 6)
d.) (4,5)
x + y = 9 ; Sub 2x in for y
x + 2x = 9
3x = 9
x=3
y=2x so if x = 3, y = 2x3 which is 6. (3,6)
400
What percent of the people surveyed like both?
What percent of the people surveyed like neither?
Supplementary
400
Is this a function?
No
For some x values, there are 2 different y values. For each input, there is not only one output.
500
Solve.
-4x - 2 + 2(x-2) = -2(x+3)
Infinitely many solutions
-2x - 6 = -2x - 6. SAME LINE
500
What is the equation for the line?
y=x + 2
500
Solve the system of equations.
x + y = 3
2x + 2y = 6
Infinitely many solutions
500
The Measure of angle X?
50
500
Write the function rule as an equation.
y=10x-4