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2 years ago

Y=2x+6, 3y=x-2 solve for unknown variables

Mathematics

2 answers:

11Alexandr11 [23.1K]2 years ago

3 0

Step: Solvey=2x+6for y:

y=2x+6

Step: Substitute2x+6foryin3y=x−2:

3y=x−2

3(2x+6)=x−2

6x+18=x−2(Simplify both sides of the equation)

6x+18+−x=x−2+−x(Add -x to both sides)

5x+18=−2

5x+18+−18=−2+−18(Add -18 to both sides)

5x=−20

5x/5=−20/5

(Divide both sides by 5)

x=−4

Step: Substitute−4forxiny=2x+6:

y=2x+6

y=(2)(−4)+6

y=−2(Simplify both sides of the equation)

Answer:

x=−4 and y=−2

I hope it helps you

MakcuM [25]2 years ago

3 0

X=-4
Y=-2
Step by step explanation

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1. Intersecting lines are always coplanar

2. Two planes never intersect in exactly one point

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Note: Coplanar means "In the same plane"

1. Each line exist in many planes. But different lines must share at least one plane for them to intersect. That is why intersecting lines are always coplanar.

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3.Three points are always coplanar because in geometry, a group of points are coplanar because there is a geometric plane that they all lie on.

4. A plane containing two points of a line always contains the entire line. Yes

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7. Two skew lines are never coplanar because skews lines are lines that do not intersect and are never parallel.

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