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2 years ago

Hi, can someone please help me? trying to graduate :(

Mathematics

1 answer:

ehidna [41]2 years ago

7 0

Answer:

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

here m = - 2 , then

y = - 2x + c ← is the partial equation

to find c substitute (3, - 2 ) into the partial equation

- 2 = - 6 + c ⇒ c = - 2 + 6 = 4

y = - 2x + 4 ← equation of line in slope- intercept form

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4 years ago

Alyssa said that 6/8 and 9/12 are not equivalent because there's no whole number you can multiply both parts of 6/8 by to get 9/

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No. 6/8=9/12
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3 years ago

Read 2 more answers

IN DESPERATE NEED OF HELP :(

Eddi Din [679]

So, the problem is asking for one of the equations to be rewritten. Lets rewrite the second one. The way to create a system of equations that will cancel is to create a situation where the a or b of both equations add to 0. In this case, we can multiply the second equation by 3 to turn the 3y into 9y.

$3(-x + 3y) = (6)3$

$-3x + 9y = 18$

Our new system is $4x - 9y =9$ and $-3x + 9y = 18$ . We can now add these together.

$4x - 9y = 9$

$-3x + 9y = 18$

Adding each part straight down, we get the equation:

$x + 0 = 27$

We now have an equation with a single variable, which also tells us that x is equal to 27.

Extra: To find the value of y after this, we merely need to plug in the value of x to one of the equations and solve for y.

$-27 + 3y = 6$

$3y = 33$

$y = 11$

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