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2 years ago

-9x -2y=3 - 2x-y=-1 HELP ASAP

Mathematics

1 answer:

Tju [1.3M]2 years ago

7 0

Answer:

is this even real what's the actual question?

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The equation of line AB is y = 1 over3x - 1. write a equation of a line perpendicular line AB in slope-intercept form that conta

k0ka [10]

Y =1/3x - 1 so slope = 1/3
if perpendicular, slope = -3

passing thru (4,-2) then
y = mx +b
-2=-3(-2) + b
-2=6+b
-2-6 = b
so b = -8

equation:
y = -3x - 8

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3 years ago

Plz i NEED HELP ABOUT TO FINISH THIS CLASS! PLZ

GrogVix [38]

The last one quick quick

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2 years ago

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I need help please it’s due today I forgot how to do this :(

choli [55]

Answer:

Samantha payed 12.71$ for her purchase.

Step-by-step explanation:

I may have misunderstood the question, but it looks like you can use a calculator for this!

6.19 + 2.85 + 2.29 + 1.38 =

12.71

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3 years ago

What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

3x + y = 9 (I)
y = –4x + 10 (II)
------------------------
 $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
-------------------------
simplify by (-1)
 $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ 

-------------------------
 $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$

-------------------------
 $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ 

-----------
 $\boxed{x = 1}$ 

Substitute in equation (I) to find the value of "Y".

3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

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3 years ago

Which ordered pair is a solution of y = x + 4?

TEA [102]

Answer:

Step-by-step explanation:

hello:

D. (9,13) because when x=9 so y=9+4 = 13.....(right)

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2 years ago

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