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Rudiy27
4 years ago
10

What is the solution to the system of equations for y= -2x - 4 and y= 2x + 4

Mathematics
2 answers:
MaRussiya [10]4 years ago
4 0
Y = -2x - 4

y = 2x +4

add the two equation

2y = 0 , y =0

2x + 4 = 0

2x = -4

x = -2
nevsk [136]4 years ago
3 0
Y = -2x - 4
y = 2x + 4

substitute the first equation into the second equation to find x;
-2x - 4 = 2x + 4
-4 = 2x + 4 + 2x 
-4 = 4x + 4
-4 - 4 = 4x
-8 = 4x
-2 = x

solve for y given the value of x into the first equation;
y = -2x - 4
y = -2(-2) - 4
y = 0

the answer is; 
x = -2, y = 0     or (-2, 0)

hope this helps, God bless!
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7 0
4 years ago
Read 2 more answers
Can plz help me in this question asap I don't get it
34kurt

Answer:

-19+-25f≤-144

Step-by-step explanation:

The problem says that you descended 19 below sea level. Below makes 19 into a negative. It also says that it descends 25 feet per minute. If it says per you put a variable by that number. It also says descends which means going down so that would be a negative. The problem says Lainey does not want to go over 144 feet(144 is also negative because it is below sea level) so 144 would be greater than or equal to because she does not wan to go over that amount.

Hope this helps!

5 0
3 years ago
What is the answer to 7x-(5x+9)+4​
Darina [25.2K]
7x -5x -9 + 4
= 2x - 5
8 0
3 years ago
The Loft Theater has a center seating section with 3c + 8 rows and 4c-1 seats in each row. Write an expression for the total num
yulyashka [42]

If there are n rows

And if each row has m seats.

Then the total number of seats shall be n × m.

Here

Number of rows = (c+8)

And number of seats in each row = (4c-1)

Using the concept

Total number of seats

= (c+8)(4c-1)

FOILing or Distributing we get

= c(4c) + c (-1) + 8(4c) +8 (-1)

= 4c² - c + 32 c -8

Combining like terms

=4c² +31c - 8

The expression for total number of seats = 4c² + 31c -8

4 0
3 years ago
Passes through (8,8) and (10,9)<br> Plz help need answer ASAP
dalvyx [7]

Answer:

y = \frac{1}{2} x + 4

Step-by-step explanation:

Assuming you require the equation of the line.

The equation of a line in slope- intercept form is

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

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (8, 8) and (x₂, y₂ ) = (10, 9)

m = \frac{9-8}{10-8} = \frac{1}{2} , then

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (8, 8) , then

8 = 4 + c ⇒ c = 8 - 4 = 4

y = \frac{1}{2} x + 4 ← equation of line

5 0
3 years ago
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