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vekshin1
3 years ago
14

Graph and check to solve the linear system x+y=3 -2x+y=-6

Mathematics
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

-x - y = -3

-2x + y = -6

-3x = -9

x = 3

3 + y = 3

y = 0

(3,0)

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Write the equation of a circle givin by (x-3)^2+(y+7)^2=4
Ostrovityanka [42]

Answer:8

Step-by-step explanation:(

x

+

4

)

2

+

(

y

−

7

)

2

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64

This is the form of a circle. Use this form to determine the center and radius of the circle.

(

x

−

h

)

2

+

(

y

−

k

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2

=

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Match the values in this circle to those of the standard form. The variable

r

represents the radius of the circle,

h

represents the x-offset from the origin, and

k

represents the y-offset from origin.

r

=

8

h

=

−

4

k

=

7

The center of the circle is found at

(

h

,

k

)

.

Center:

(

−

4

,

7

)

These values represent the important values for graphing and analyzing a circle.

Center:  

(

−

4

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7

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8

6 0
3 years ago
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n200080 [17]
Answer is d if not it’s b hope this helps
3 0
3 years ago
The line x − y = 2 is on a coordinate plane and contains EF, which is one side of square EFGH. What is the slope of the line tha
Alborosie

Answer:

The slope of FG is -1

Step-by-step explanation:

Given

Square EFGH

EF: x - y = 2

Required

Determine the slope of FG

First, we calculate the slope of EF

x - y = 2

Make y the subject

-y = 2 - x

y = x -2

The general equation has the form: y = mx + b

Where

m = slope

Compare y = mx + b to y = x -2

m = 1

<em>From the name of the square EFGH, we can conclude that EF and FG are perpendicular</em>

<em />

The relationship between perpendicular lines is:

m_2 = -\frac{1}{m_1}

Where

m_1 = m = 1 -- Slope of EF

and

m2 = slope of FG

Substitute 1 for m1 in m_2 = -\frac{1}{m_1}

m_2 = -\frac{1}{1}

m_2 = -1\\

<em>Hence, the slope of FG is -1</em>

3 0
3 years ago
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ziro4ka [17]

Answer:

1 is B

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Step-by-step explanation:

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