Question

Solve, using the substitution method.



y = 2x + 6
3x – y = 6



A.
There are an infinite number of solutions.


B.


(12, 30)


C.


(14, 12)


D.
There is no solution.

Answer 1

@PigPresident

Answer 2

12

Answer 3

is it b or c

Answer 4

y = 2x + 6
now sub 2x + 6 in for y in the other equation
3x - y = 6
3x - (2x + 6) = 6
3x - 2x - 6 = 6
3x - 2x = 6 + 6
x = 12
now sub 12 in for y in either equation to find y
y = 2x + 6
y = 2(12) + 6
y = 24 + 6
y = 30

check...
3x - y = 6
3(12) - 30 = 6
36 - 30 = 6
6 = 6 (correct)

solution is : (12,30)

Answer 5

o ok thanks

Answer 6

typo...sub 12 in for x
your welcome..glad to help :)