Y = -3x + 5 y = -8x + 25 using the elimination method

x= 4

y=-7

Step-by-step explanation:

y=-3x+5

y=-8x+25

re arrange both equations into

3x+y=5

8x+y=25

multiply one equation  by -1 to make eliminating possible

we will multiply the second

3x+y=5

-8x-y =25

cross out the y leaving

-5x=-20

divide

x=4

now we substitute x in one of the equations

lets use the first

3(4) +y=5

12+y=5

now minus 12 on both sides

y=-7

(4,-7)

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!