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Shtirlitz [24]
3 years ago
11

1) How would you test whether (2, -2) is a solution of the system?

Mathematics
1 answer:
drek231 [11]3 years ago
5 0

When you’re given two coordinates, recall that the coordinates are in the format of (x, y).

Knowing this, you know that in the coordinate (2, -2) the value of x equals 2 and the value of y equals -2.

Thus, we can put these variables into the two given equations and see if the equations hold.

-2 < -2(2) + 3

-2 < -4 + 3

-2 < -1

As you can tell, the first equation holds since -1 is bigger than -2.

Onto the second equation.

-2 ≥ 2 - 4

-2 ≥ -2

As you can tell, the second equation holds as well since -2 equals -2.

This means that yes, (2, -2) is a valid solution.

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Rút gọn M=[ căn x -2/x-1- căn x +2/x+2 căn x+ 1] nhân x bình-2x+1/2 với x&gt;0 x khác 1
Ymorist [56]

Answer:

Step-by-step explanation:

3 0
3 years ago
How can i find values if h(-4) h(x)=1/2x-1???
anzhelika [568]

plug in -4 in for x. then solve.

h(-4)=1/2(-4)-1

h(-4)= -3

6 0
3 years ago
Which property do i use to solve x-10=15
Stells [14]
Add both sides by 10

x=25
3 0
3 years ago
James is framing a rectangular print for art class and needs to know the perimeter. The length of the print is 24 inches and the
ollegr [7]

Answer:

84

Step-by-step explanation:

Given,

Length of the print(l) = 24 inches

Width of the print(b) = 18 inches

Perimeter of the print(P)= ?

We know,

Perimeter of the print(P) = 2(l + b)

= 2(24 + 18)

= 2(42)

=84 inches^2

5 0
3 years ago
A pair of equations is shown below: y = 8x − 9 y = 4x − 1 Part A: Explain how you will solve the pair of equations by substituti
babunello [35]

Answer:

see below

Step-by-step explanation:

y = 8x − 9

y = 4x − 1

Since the two equations are both equal to y set them equal to each other

8x -9 = 4x-1

Subtract 4x from each side

8x - 9 -4x = 4x-1-4x

4x -9 = -1

Add 9 to each side

4x-9+9 = -1+9

4x = 8

Divide by 4

4x/4 = 8/4

x=2

Now find y

y =4x-1

y = 4(2) -1

y = 8-1

y = 7

(2,7)

The solution to the system of equations is where the two lines intersect.  When  the two lines are graphed, they will intersect at (2,7)

7 0
4 years ago
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