Solve, using the substitution method.

y = 4x + 6
5x – y = 6

(Points : 1)
There are an infinite number of solutions.
There is no solution.
(18, 12)
(12, 54)

Question

Solve, using the substitution method.

y = 4x + 6
5x – y = 6

(Points : 1)
       There are an infinite number of solutions.
       There is no solution.
       (18, 12)
       (12, 54)

luigi0210 · Answer

If the equations were the same they'd have infinitely many. But they're not so you can cross that out.

luigi0210 · Answer

If they had the same slope they's be parallel and have no solution, so you can cross that one out too. Leaving just C and D as options.

anonymous · Answer

the answer tht i believe it is D because i dont think it could be lower then but im not entirely sure

luigi0210 · Answer

Yup, that would be it~

luigi0210 · Answer

Sub in: 
$$\LARGE 5x-(4x+6)=6$$
Distribute:
$$\LARGE 5x-4x-6=6$$
Now just finish for x :3

whpalmer4 · Answer

You could try actually solving it via the substitution method :-)

$$y = 4x+6$$$$5x-y=6$$Substitute the first equation into the second:$$5x-(4x+6) = 6$$Collect like terms$$x-6=6$$$$x=12$$Now plug value of $x=12$ into either equation to find $y$
$$y=4(12)+6$$$$y=$$

luigi0210 · Answer

If you want a good explanation^