For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

2x + 6y = 18
3x − 2y = 6

Question

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

2x + 6y = 18
3x − 2y = 6

anonymous · Answer

a. −3y + 9 	
	b. −3y − 9 	
	c. 3y − 9 	
	d. 3y + 9

anonymous · Answer

a) -3y+9


Simplify your equation by isolating the x
$$2x+6y=18      \rightarrow 2x=-6y+18 \rightarrow x=-\frac{ 6 }{ 2 } y+\frac{ 18 }{ 2 }\rightarrow x=-3y+9$$

anonymous · Answer

thanks :D