Question

An equation is shown below:

9x - y = -2

Part A: Explain how you will show all of the solutions that satisfy this equation. (4 points)

Part B: Determine three different solutions for this equation. (4 points)

Part C: Write an equation that can be paired with the given equation in order to form a system of equations that is inconsistent. (2 points)
please help me i will fan you

Answer 1

please help i really to finish this i will give you an invisible cupcake with a cherry on top :D

Answer 2

okay thanks for the cooky
well for part a i think you have to plug in random values of either x or y and find y or x resultants values and make 4 points from 4 plugged values

Answer 3

actually thats for part 2

Answer 4

okay ill do that then what about part b and c

Answer 5

oh sorry

Answer 6

i guess it works for both

Answer 7

i think for a lets say x=c then y=9c+2

So all the possible solutions are (c,9c+2) (you can also keep x)

Answer 8

what part is that for

Answer 9

a

Answer 10

okay thanks so much you get all the cupcakes in the world. what about part c

Answer 11

well to find inconsistent solution just find an equation that is parallel to this one..meaning they have the same slope so[ y=9x+c (but c doesnt equal to +2 )] would be inconsistent solution

Answer 12

oh i get it thank you sooooooooo much. do you think you could help me with one more

Answer 13

yw and for sure dude

Answer 14

k here it is
A system of equations is shown below:

-3x + 7y = -16
-9x + 5y = 16

Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. (6 points)

Part B: Show that the equivalent system has the same solution as the original system of equations. (4 points)

Answer 15

first of all you cookies taste wonderful :)

Answer 16

aww thanks

Answer 17

okay
you can use elimination method.

since

-3x + 7y = -16
-9x + 5y = 16
\[\frac{ 9 }{ 3 }*\frac{-3x + 7y = -16 }{ -9x + 5y = 16 }\]

Answer 18

and by simplify it and finding the value of y
you can plug in one of the equations to find x

Answer 19

yay thanks so much *gives a batch of chocolate cupcakes* enjoy!! :D

Answer 20

ohhhhhhhhhhhhhh wait im sorry that is different solution i didnt read the last section of part one

Answer 21

im sorry
but this one is THE ONE
look

since we have the following equations

-3x + 7y = -16 ---- (1)
-9x + 5y = 16 ---- (2)
and it says we have to "Replace one equation with the sum of that equation and a multiple of the other."

Let us replace (2) by adding (2) to two times (1):
2 times (1): -6x + 14y = -32
Add (2): -9x + 5y = 16
--------------------
-15x + 19y = -16

So the second pair of equations are:
-3x + 7y = -16 ---- (1)
-15x + 19y = -16 ----- (3)


For B)
Solve (1) and (2) for x,y
Solve (1) and (3) for x,y

Show they are the same solutions.

its very simple did you got it ?

Answer 22

yes thanks i finally understand. the problem with online math classes is that they dont explain anything but you explained everything perfectly thanks so much

Answer 23

yw