Solve by using substitution?

Question

y=x+2
y=3x

Answers:
1,3
0,0
3,1
1/3,1

Answer 1

y = x + 2
y = 3x

Substitute 3x for y in the first equation.

3x = x + 2

sbutract x

2x = 2
x = 1

plug back into original:
y = 3x
y = 3(1)
y = 3

so the sol'n is (1,3)

Answer 2

1) y = x + 2
2) y = 3x

Both equations are already solved for y in terms of x, so you can use either one to make a substitution into the other

)1 into )2

x + 2 = 3x
2 = 2x
1 = x

y = x + 2
y = 1 + 2
y = 3

Point of intersection is (1, 3)

Answer 3

After substituting you have

3x = x + 2

subtract x from both sides

2x = 2

divide by 2

x = 1

Now go back and plug 1 in for x and solve for y.

y = 1 + 2
y = 3

The answer is (1, 3).

Answer 4

You have both already specified in terms of y, so just equate them:

3x = x + 2

Now solve by subtracting x from both sides:
2x = 2

Divide both sides by 2:
x = 1

Now plug this back into one of the equations to get y:
y = 3x
y = 3(1)
y = 3

So your answers are:
x = 1, y = 3

This is answer a) 1, 3

Answer 5

x=1
y=3
because if u put it as: 3x=x+2
then u just substituted y=3x into y=x+2
after that u just subtract x from the 3x to get 2x then u divide 2x into 2 to get 1
then u go back to y=3x and plug in 1 for x then multiply 3 to 1 and that's Ur answer

Answer 6

by substitution

plug in y=3x into first equation

3x = x + 2

2x = 2
x=1

y= 3*1 = 3
thus (1,3)

check
y=x+2
3 = 1+2

true

CHECK

Answer 7

If y = x + 2 and y = 3x, then we can substitute 3x for y in the first equation.

3x = x + 2
2x = 2
x = 1

If y = 3x, then y = 3.

The answer is (1,3)

Answer 8

3=1+2 correct
0=0+2
1=3+2
1=1/3+2

3=1x x=3
0=0x x=1,2,3...
1=3x x=1/3
1=1/3x or 1=.333...x x=1/.333...

Answer 9

it is 1,3 by using substitution

Answer 10

1,3