Move the 1st equation to get y by itself so it’s now y=-4x so you can substitute that in for the second equation 2y+x=-7 becomes 2(-4x)+x=-7
-8x+x=-7
-7x=-7
x=1
then plug that back in to find y
4(1)+y=0
4+y=0
y=-4
now you have x and y so your coordinate (the answer) is (1, -4) hope this helps!
Answer:
Step-by-step explanation:
Try 16.75 you may have to check over it but thats what i got. I only could do the first one. Good luck!
Answer:
yes
no
no
yes
no
Step-by-step explanation:
7/20 + 3/5 = 19/20 (yes/no) | it goes through
3/5 + 3/10 = 3/15 (yes/no) | doesn't go through
1/2 + 2/3 = 3/5 (yes/no) | doesn't go through
1/10 + 1/2 = 3/5 (yes/no) | it goes through
3/5 + 1/20 = 9/20 (yes/<u>no</u>) |<em> doesn't go through</em>
Answer:
Step-by-step explanation:
11/77=x/21
x=3
Slope is rise over run = 2/1=2