Identify the Domain and Range
(0,1) (2,3) (3,4)
Domain= 0,2,3
Range=1,3,4
Evaluate [ 2 3]
[4 0]
12
4xy-8x-2yx+9x+9
2xy+x+9
Calculate the slope of (-2,4) and (3,-6)
-2, falls
(0.002 x 10^-4)(300)
__________________
(0.03 x 10^12)(4000x10^6)
5x10^-25
Range=3,11,19,27,35
Find [8 4] - [0 7]
[-3 9] - [-8 2]
[8 11]
[5 7]
6xy-7x-4yx+8x+14
2xy+x+14
Evaluate 3ab-a+ (a-b)/2 if a=-4 and b=6
-73
Is the equation pressure = force/area a joint variation? How do you know?
Yes, two variables depend on one
Graph the equation y=-3x+4 by creating an x and y table.
x=-1,0,1
y=7,4,1
Graph
(Show Ms. Acup your work)
Determine whether the product of matrices A and B is defined. If so, give dimensions.
A 3x5
B 3x6
No, second number of first has to match first number of second
Write the polynomial in standard form.
Identify leading coefficient and constant term.
x-3+2x^2+3x^4-3x^2
3x^4-x^2+x-3
LC=3
C=-3
The amount of money Trevor gets for babysitting is directly proportional to the number of hours he babysits. If he babysits for 3 hours and earns $18, how much does he earn if he babysits 45 hours?
$270
What is the new amount when 63 is decreased by 60%?
25.2
Lines y=1/3x +6 and y=-3x-4 intersect at point (-3,5). Is the system consistent and independent, consistent and dependent, or inconsistent.
Consistent and Independent
Find x
[8 x+2]
[3 4] =44
x= -6
Solve 14(r+1)=4(r+4)+8r
r=1
Jolene gets $15 for three hours of work. How much does she get for 43 hours?
$215
Hannah lives 5 miles from school. Ellen lives 9 miles from school. Write an inequality to represent the possible distances between their homes.
4 less than or equal to x less than or equal to 14
Find the constant variation for this data set
x=6,8,10,12
y=10,7.5,6,5
xy=60
constant variation is 60
Find [7 2]
[x+2 4] =38
-7
Classify -x^4 +5x by degree and by number of terms
quartic binomial
Solve for r
8(r-2)=3(r+2)-6r
r=2
Identify the subsets of real numbers which -4/5 belongs to.
Real, Rational