Vocabulary
Understanding Rational Numbers
Understanding Roots
Functions
Slope Intercept Form
100
What are coordinate points?
the values for a plot on a coodinate plane
100
Change .25 into a fraction
1/4
100
What is the square root of 81?
9
100
How do you know if a graph shows a linear function?
The graph shows a straight line.
100
What is the equation for slope intercept form? Give an example using the slope and y-intercept of a linear function.
y = mx + b
y = 7x + 2
200
What is the rate of change and how it is represented in an equation?
The rate of change is the same as slope. It is represented by the letter m
200
Change .67 into a fraction
2/3
200
What is the cube root of 27?
3
200
y = 4x - 8
200
Use the coordinates points to find slope.
(2,8), (6,10)
m = 1/2
300
What is the vertical line test?
You can determine if a graph shows a function if a vertical line touches more than one point on the graph.
300
Write 0.5 repeating as a fraction
x = 0.555
10x = 5.555
-x -.5555
9x = 5
5/9
300
What is the cube root of 8/27?
2/3
300
What type of function is this?
non linear function.
300
Larry runs 10 miles in 2 hours while he was at a park which is one hour away from home. Write this situation using the slope intercept form. How far away from home is Larry?
(Hint - find the value of k)
y = 5x + 1
400
What is the difference between a discrete function and a continous function.
a dicrete function using whole number values (dotted line graph),
a continous function may include fractions (line graph).
400
Write .18 repeating as a fraction
x = 0.181818
100x = 18.181818
-x -.181818
99x = 18
x= 18/99
x = 2/11
400
x2 = 7 Write this as a square root.
square root of +7 or -7
400
Is this a function? Why?
Yes. Each x value is unique to a y value
400
Sam has $37 to spend at a festival. The price of admission is $10 and tickets to each attraction cost $0.75. How many tickets can he buy?
36 tickets. He will have $27 left over after admission and 27 divided by $0.75 is 36.
500
What letter represents the y-intercept?
b
500
Change the decimal into a fraction 1.62333
x = 1.62333
1000x = 1623.33
-100x -162.333
900x = 1461
x = 1461/900
x = 1 187/300
-
500
Solve the equation
z3 = 125/216
z = cubed root of 125/216
z = 5/6
500
y = 7x + 1
500
Write an equation for the line
y = 2x + 10