Question

The graph below shows a system of equations.

The x-coordinate of the solution to the system of equations is __________

Answer 1

Where is tyhe graph?

Answer 2

solution is where the two eqns intersect each other :)

Answer 3

so -2 ?

Answer 4

got it!
substitute x = 4-y from first equation to the second equation

Answer 5

wait, is it -2 ?

Answer 6

yes, the question makes it easy by showing u the lines already. @thisSucks shows u how to actually solve it with no graph :)

Answer 7

ok,so its -2

Answer 8

help me with another question ? @superdavesuper

Answer 9

Sure...if its not too difficult :P

Answer 10

The table below shows some values of f(x) and g(x) for different values of x.

Complete the chart and determine the solution of the equation f(x) = g(x)?

Answer choices :

x = -2

x = -1

x = 1

x = 4

Answer 11

u can either solve the equations directly or just plot the graphs using https://www.desmos.com/calculator

Answer 12

ok, how about this one. i have my answer but im not sure.

Which of the following inequalities is modeled by the graph?

2x + 5y ≥ 14; x ≥ 0

2x + 5y ≤ 14; x ≥ 0

2x - 5y ≤ 14; x ≥ 0

-2x - 5y ≤ 14; x ≥ 0

Answer 13

wait wait back to the question before last - u cant solve it direct so u must use the graphing calculator. do u know how to use it?

Answer 14

im trying now but no i dont.

Answer 15

For the new question, notice x=2 and y=-2 is within the shaded area. so u can put that into the inequality to see which one is right.

Answer 16

i think its C ...

Answer 17

In Desmos, type in y=3x+7 and y=4^-x to see where they intersect.

Answer 18

thats not the equations .its the f(x) g(x) thing

Answer 19

it is the same thing, u are plotting f(x) and g(x) using the graph calculator...

Answer 20

ok i did it on the graph.. its -1

Answer 21

correct on the graph one....c is not the right answer though :(

Answer 22

remember the correct inequality should be right for - x=2 and y=-2

Answer 23

typo typo typo - remember the correct inequality should be right for x=2 and y=-2

Answer 24

So the correct inquality should be....

Answer 25

;)

Answer 26

But does x=2 and y=-2 satisfy D? i dont think so....

Answer 27

Hahahaaa sorry - x=2 and y=-2....A???

Answer 28

After we are done w the last one first :P

Answer 29

ok, u said it wasnt A.B.C or D so make up your mind !!

Answer 30

Tell me why B is the right answer plz?

Answer 31

Did u eaver say B is the right answer? I dont think so...

Answer 32

that was actually my second guess, scroll up

Answer 33

help me with this one pleasee?

answer choices :
Graphs Q and R

Graphs P and R

Graphs R and S

Graphs P and Q

Answer 34

The question is asking: which two graphs represent y=5(1/2)^x and y=1/2(5)^x okay?

Answer 35

ok

Answer 36

So use the graph calculator and plot the eqns to see which two of them match...

Answer 37

do i use that graph calculator for every single graph question ?

Answer 38

Hahaha it is a very useful tool but u dont have to use it EVERY time :P

Answer 39

ok, i got the answer. its A

Answer 40

:) i know u can figure it out!

Answer 41

its A right

Answer 42

next question ...?

A recycling company recycles wet and dry wastes. In a week, each ton of dry waste takes 35 hours for collection and 55 hours for processing. Each ton of wet waste takes 42 hours for collection and 63 hours for processing. The company's collection workforce can work for maximum 150 hours in a week and the processing machine can work for maximum 200 hours in a week. Let D represent the number of tons of dry waste that the company can recycle in a week and W represent the number of tons of wet waste that the company can recycle in a week. Which of the following statements best explains whether the company will be able to recycle 3 tons of dry waste and 2 tons of wet waste in a week?

The company will be able to recycle these wastes in a week because of the system restrictions of 35D + 63W ≤ 200 and 55D + 42W ≤ 150.

The company will be able to recycle these wastes in a week because of the system restrictions of 35D + 55D ≤ 150 and 42W + 63W ≤ 200.

The company will not be able to recycle these wastes in a week because of the system restrictions of 35D + 42W ≤ 200 and 55D + 63W ≤ 150.

The company will not be able to recycle these wastes in a week because of the system restrictions of 35D + 42W ≤ 150 and 55D + 63W ≤ 200.

Answer 43

sorry lunch time - plz post it as a new prob if u dont wanna wait :)