X+y=-1
3x-y=21
add them equations
x+y=-1
<u>3x-y=21 +</u>
4x+0y=20
4x=20
divide by 4
x=5
x+y=-1
5+y=-1
minus 5 both sides
y=-6
(x,y)
(5,-6)
D is answer
Answer:
The first table.
Step-by-step explanation:
Every single time, the x is being multiplied by 3 to get the y, and that means its proportional. Also, the second one is for sure NOT proportional
Answer:
a= 2/5
b= 30
c= 18
d= 3:2
e= No, because the fraction or ratio is the same, all you need to do is simplify it!
Answer:
The answer is 1. an exponential pattern ,friend (: