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svetlana [45]
3 years ago
11

HELPPPPPPPPPPPPPPPPWhich statements are true about the ordered pair(-1, -4) and the system of

Mathematics
1 answer:
Anastasy [175]3 years ago
3 0

Answer:

When (-1,-4) is substituted into the second equation, the equation  is true.

The ordered pair (-1,-4) is a solution to the system of linear  equations.

When (-1,-4) is substituted into the first equation, the equation is  true.

Step-by-step explanation:

Given

x - y = 3

7x - y = -3

Required

What is true about (x,y) = (-1,-4)

To do this, we substitute -1 for x and -4 for y in both equations;

For x - y = 3

-1 - (-4) = 3

-1 + 4 = 3

3 = 3

<em>Hence: </em>(-1,-4)<em> is true for </em>x - y = 3<em></em>

For 7x - y = -3

7(-1) - (-4) = -3

-7 +4 = -3

-3 = -3

<em>Hence: </em>(-1,-4)<em> is true for </em>7x - y = -3

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Step-by-step explanation: The formula to find the area of a circle is 3.14r^2. R stands for radius which is 6 in this case so just plug that in for R. 3.14(6)^2=113.1

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Solve for z.<br> az - 17 = -4z-b
Bingel [31]

Answer:

z = (-b + 17)/(a+4)

Step-by-step explanation:

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What is f(7) for the rule of f(x)=-5x+10​
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How do you find the average rate of change for f(x)=9-x^2 between two points: x=0 to x=3?
ICE Princess25 [194]

Answer:

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Step-by-step explanation:

We are given the function:

f(x)=9-x^2

And we want to find the average rate of change from <em>x </em>= 0 to <em>x </em>= 3.

In other words, we will compute the function at the two endpoints, and then find the slope of the line that crosses the two points.

For our first endpoint at <em>x</em> = 0, our function evaluates to:

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