which ordered pair is a solution of y=5x
a.-2,10
b.-5,25
c.-3,15
d.-2,-10

- anonymous

which ordered pair is a solution of y=5x
a.-2,10
b.-5,25
c.-3,15
d.-2,-10

- chestercat

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- anonymous

First You need to try substituting the options

- anonymous

The correct answer will be equal on both sides of the equation

- texaschic101

this is just a matter of substitution to see which one is correct
I will do the first one..
y = 5x
(-2,10)...x = -2 and y = 10
now we sub
10 = 5(-2)
10 = -10 ...this is incorrect and is not a solution.
now sub in your points and find the one that is correct

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## More answers

- anonymous

is it b?

- texaschic101

when you sub in your points....does it make the equation true ?

- anonymous

im a bit confused

- anonymous

on substituting

- texaschic101

your points are set up like this....(x,y)
y = 5x
(-5,25)....x = -5 and y = 25
now sub
25 = 5(-5)
25 = -25.....is this correct ?

- anonymous

For substituting for this problem you are going to simply take the first number in the problem and replace it with the X and replace the second number for the y and then multiply the x number by five since they are coordinates.

- anonymous

no

- texaschic101

so b is not the solution. Now try your other answer choices and find the one that is true

- anonymous

oh it's D

- texaschic101

BINGO...yes...you got it

- anonymous

thank you

- texaschic101

sure thing :)

- anonymous

wait

- texaschic101

ok

- anonymous

can you help me again...

- texaschic101

I can try

- anonymous

which ordered pair is a solution of -7x+2
a. 1,2
b. 8,-54
c.5,-35
d.1,-7

- anonymous

now i was worming out this one and thinking it's c

- anonymous

working*

- texaschic101

do it the same way......oh...wait....this is not the entire equation...whats it equal to ?

- anonymous

yeah it's a question mark next to the 2

- texaschic101

I do not understand....it is not an equation if there is no equal sign.
this is what would happen if I just subbed in the points...
-7x + 2
(1,2)...x = 1 and y = 2
now sub
-7(1) + 2 =
-7 + 2 =
-5
there is not even a y in your equation....I cannot solve this

- anonymous

sorry it's y= -7x+2

- anonymous

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