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4x - 2y = 8 can be rearranged into point intercept form: y = 2x - 4

Parallel lines have the same slope, just different intercepts. The y intercept in the new equation is (0,-8) so the equation is $\boxed{y = 2x -8}$

Rotating 90$^\circ$ clockwise around the origin would make the new x coordinate the old y coordinate and the new y coordinate would be the negative of the old x coordinate so the coordinates of Z' are (-2,3)

The third equation has no y-term, so let's eliminate the y-term from the combination of the first two equations.

x + y + 3z  =  10     --->     x -2     --->     -2x - 2y - 6z  =  -20

-4x + 3y + 5z  =  7       --->                      -4x + 3y + 5z  =  7

Add down the columns:                             -6x - z  =  -13   

Since  kx + z = 3        --->         z  =  3 - kx

Substituting these:        -6x - (3 - kx)  =  -15

                                         (k - 6)x  = -18

If  k - 6  =  0,  there is no value for x that will result in a product of -18

so  k = 6  results in no possible solution.

For every other value of k, there will be a value of x that can produce a product of -18.

So the answer is k = 6.

Which ones have you already discounted? Why?

What is the domain and range of the function?

As shown??  where is the pic?

You have posted 5 questions.

Do you want us to do all your homework for you.

It is not happening.

I am closing this question.

If you want one asnswered, then post one. Preferably with a photo of what you have tried.

Please show us what you have done so far.

How about proofreading your question.     

At the butcher shop of a supermarket, 60 kg of beef were sold, which corresponds to 40% of the stock. How many kilograms were in stock?

40% of x = 60kg

0.4x=60

find x

Still doesn't make sense to me. 

Do you understand what is being asked?

okay, here goes: g(x,y) = {(mod(x)=2 > 0), -1}

Would you like to write that in a different way that others may understand?

16 out of  (16+3 + 1 )   is   water    16/20

16/20 * 3 = __________  gallons of water needed

3 - 2i   is also a solution

( x -3 - 2i)(x-3+2i)      expand and fins the answer....

https://web2.0calc.com/questions/help-pleaseeee_5

PLease DO NOT POST questions MULTIPLE TIMES !  

5.0625 x   = x (1+ p/100)⁴

5.0625 = (1+p/100)^4

1.5 = 1 + p/100

.5 = p/100

p = 50 %

x = startovers @ 30 sec

5x startovers at 6 sec

x + 5x = 50

6x = 50

x = 8.333      30- second starts

  8.333 * 30 sec =  250 seconds

Minute hand moves six degrees per minute on a clock face

6  ( 34-21) = ________  degrees

By the Pythagorean Theorem, the sum of the areas of the two squares is 9.

See https://web2.0calc.com/questions/please-help-fast_21

first just map out what the starting and ending cubes are. or print the thing out and make the cubes as a diy lol