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4 years ago

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Find the missing coordinate if the ordered pair is to be a solution to the equation 3x+y=9:(?,-9)

2 answers:

Yuri [45]4 years ago

7 0

3x + (-9) = 9
3x - 9 = 9
3x = 9 + 9
3x = 18
x = 18/3
x = 6 ← <span>missing coordinate

Answer: (6, -9)</span>

Svetach [21]4 years ago

7 0

Answer:

The ordered pair (6, -9) is a solution to the equation $3x+y=9$

Step-by-step explanation:

A point is said to lie on the graph, if the point can satisfy that equation of the line. To check if a particular point satisfies an equation, all you have to do is substitute the value of the point in that equation and check if it validates the equation.

We know the equation of the line $3x+y=9$ and the ordered pair (a, -9) is a solution to the equation.

Substitute this point into the equation

$3a+(-9)=9$

and solve for a

$3a-9=9\\3a-9+9=9+9\\3a=18\\\frac{3a}{3}=\frac{18}{3}\\a=6$

The ordered pair (6, -9) is a solution to the equation $3x+y=9$ because when you substitute the value of the point into the equation it validates the equation.

$3(6)+-9=9\\18-9=9\\9=9$

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Answer:

x + y = 36 (1)

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Step-by-step explanation:

Quanrity of Holiday blend = 36 pounds

Cost per pound of the blend = $6.00

Cost of chocolate chips = $7.00 per pound

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The system of equation is

x + y = 36 (1)

7x + 4y = 216 (2)

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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Find two different planes whose intersection is theline:x = 6 + 3ty = -8 - 3tz = -1 - tWrite equations for each plane in the for

alina1380 [7]

Answer:

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Step-by-step explanation:

To find the two planes whose intersection is the line

$x=6+3t\\ y=-8-3t\\ z=-1-t$

You can say that <em>t</em> is equal to this expression

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You can see in the image attached that the intersection of this planes is the line

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3 years ago