Question

Evaluate -12(-2)

Answer 1

12 times 2 = ???

Answer 2

24

Answer 3

that is your answer because the two negatives will cancel out

Answer 4

i forgot about that thanks

Answer 5

np

Answer 6

Evaluate -3 - 9 please

Answer 7

-12?

Answer 8

when subtracting 2 negative numbers, you add the values themselves (ignore the signs) and you make the result negative

Answer 9

yep

Answer 10

-3 - 9 = -12

Answer 11

this is confusing Evaluate -2 · -5

Answer 12

do the same thing as we did in -12(-2)

Answer 13

is it 10?

Answer 14

yep

Answer 15

wow lol seems easy

Answer 16

yeah once you get the hang of it, it's not so bad

Answer 17

Evaluate: negative 8 over negative 4 ????

Answer 18

the negatives cancel

Answer 19

8/4 = ???

Answer 20

2

Answer 21

yes

Answer 22

:D!

Answer 23

-15 + (-4) will be 19?

Answer 24

general rule

(positive) times (positive) = positive
(negative) times (positive) = negative
(positive) times (negative) = positive
(negative) times (negative) = positive


(positive) divided by (positive) = positive
(negative) divided by (positive) = negative
(positive) divided by (negative) = positive
(negative) divided by (negative) = positive

Answer 25

no, -15 + (-4) is the same as -15 - 4

Answer 26

both numbers are negative, so the result is negative

Answer 27

-15 + (-4) could be thought of

you're $15 in debt and you spend $4, so you're $4 further into debt

Answer 28

oh!
so -19?

Answer 29

yep

Answer 30

you'll be $19 in debt total

Answer 31

Evaluate -10 + 6 is -4?

Answer 32

good

Answer 33

Evaluate 7 - (-1) is 8 then

Answer 34

negatives cancel out

Answer 35

good, that's the same as 7 + 1

Answer 36

thanks

Answer 37

np

Answer 38

Solve the following system by using graph paper or graphing technology.

2x + 2y = –6
3x – 2y = 11

What is the solution to the system? please help

Answer 39

which way do you want to do it

Answer 40

using graph paper or graphing technology

Answer 41

(–1, –7)

(1, –4)

(2, –1)

(3, –2)

Answer 42

multiple choice :0

Answer 43

i think its 1,-4

Answer 44

oh you can just plug in each choice into both equations

for example, let's test if choice A is the answer


2x + 2y = –6
2(-1) + 2(-7) = –6 ... Plug in (-1,-7)
-2 -14 = –6
-16 = -6 ... which is FALSE

So choice A cannot be the answer

Answer 45

you are correct, it is (1, -4)

Answer 46

yes! lol


The graph of a system of equations will intersect at more than 1 point.


Always

Sometimes

Never

?

Answer 47

which one do you think it is

Answer 48

sometimes

Answer 49

good

Answer 50

:O

Answer 51

The graph of a system of equations with the same slope and the same y-intercepts will have no solutions. ?

Answer 52

think about it: a line is uniquely defined by the slope and y intercept

so if two lines have the same slope and y intercept then they are

a) the same line

or

b) two different lines

???

Answer 53

Always

Sometimes

Never ?

Answer 54

which one do you think it is

Answer 55

sometimes?

Answer 56

or never

Answer 57

two lines have the same slope and y-intercept means that they are the same line

Answer 58

so always?

Answer 59

the original statement was

"The graph of a system of equations with the same slope and the same y-intercepts will have no solutions. "


right?

Answer 60

yeah

Answer 61

so that's never going to happen because two lines that are really the same line have an infinite number of solutions

Answer 62

so always then

Answer 63

no

Answer 64

when they say "The graph of a system of equations with the same slope and the same y-intercepts will have no solutions. "

it's never going to happen, so it's never