Question

What is the solution to the linear system of equations?
x – y = 4
8x + 2y = 2











A.
(4, 0)







B.

(1, –3)








C.
(1, 3)







D.
The system has no solution.
http://lv.k12.com/mediaFiles/Ninth_Grade/Math/Unit17526/Lesson68681/VHS_PA_S2_02_L312_Q5.gif

Answer 1

ok first you need to get the equations into slope intercept form

Answer 2

ok

Answer 3

then you need to graph those equations

Answer 4

k

Answer 5

after that you find the point were the two lines intersect

Answer 6

All u really have to do is plug in the answer choices into both equations to get the equations and check them

Answer 7

if you wait one sec i will do the math real quick and get you your answer

Answer 8

yes i like doing it this way though

Answer 9

But wouldn't it be easier and less work to just plug it in and check them

Answer 10

yeah but this it more fun this way for me at least

Answer 11

what do u plug in?

Answer 12

U plug in the answer choices into the equations and check for each one to be right

Answer 13

ok......what numbers do i plug in? @Thackery @pizza12

Answer 14

Solve by substitution

x – y = 4 ----> x = y + 4
8x + 2y = 2

Plug in (y + 4) for x in the second equation.

Answer 15

Like this...

8(y + 4) + 2y = 2

8y + 32 + 2y = 2

Now add like terms and just solve for y.

Answer 16

i passed thanks