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3 years ago

Which is easier to solve for when using substitution y=6x-9 or y=-3x

Mathematics

2 answers:

zepelin [54]3 years ago

7 0

x=-1 y=-15

Step-by-step explanation:

y=6x-9. y=-3x

-3x=6x-9

-9x=9

x=-1

y=6(-1)-9

y=-6-9

y=-15

erastova [34]3 years ago

5 0

Answer: In my opinion, the easiest one for me to solve would be y=6x-9

Step-by-step explanation:

Like I said it’s how I would really think about this

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3 years ago

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Ou pick a card at random. Without putting the first card back, you pick a second card at random.

Arte-miy333 [17]

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3 years ago

What is the y-intercept Of the function Represented by the table of values belowX -2 1 2 4 7 y 15 6 3 -3 -12

Kipish [7]

Given:

The table of values.

To find:

The y-intercept of the given function.

Solution:

The table of values represents a linear function because the rate of change is constant.

Consider any two points from the given table. Let the two points are (-2,15) and (1,6). Then the equation of the linear function is

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-15=\dfrac{6-15}{1-(-2)}(x-(-2))$

$y-15=\dfrac{-9}{1+2}(x+2)$

$y-15=\dfrac{-9}{3}(x+2)$

$y-15=-3(x+2)$

Adding 15 on both sides, we get

$y=-3x-6+15$

$y=-3x+9$

Putting x=0, we get

$y=-3(0)+9$

$y=0+9$

$y=9$

The y-intercept is 9. Therefore, the correct option is C.

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3 years ago

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10. Suppose you are a salesperson for the Acme Dynamite Company. Each month you earn $400 plus one sixth of your sales.

Liula [17]

ANS

$15600 worth of explosives.

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$3000 - 400 ( 1/6x )

$\\ = ( \frac{1}{6} x)$

= $2600

$\\ = ( \frac{1}{6} x)$

= $

$\\ \frac{2600}{ \frac{1}{6} } = x$

$x = 15600$

Thank You !!!!

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3 years ago

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Alexus [3.1K]

Answer:

With?

Step-by-step explanation:

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2 years ago

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