-x-y=-9
-3x-2y=-28
eliminate the x first
multiply the first system of equations by 3
(3)(-x)=-3x
(3)(-y)=-3y
(3)(-9)=-27
-3x-3y=-27
-3x-2y=-28
eliminate the systems of equations by subtracting
-3x--3x-3y--2y=-27--28
-3x+3x-3y+2y=-27+28
-y=1
multiply -1 for -y=-1 to get positive y
(-y)(-1)=(1)(-1)
y=-1
substitution method by using y=-1 into one of the system of equations
-x-y=-9
-x--1=-9
-x+1=-9
move +1 to the other side
sign changes from +1 to -1
-x+1-1=-9-1
-x=-10
multiply by -1 for -x=-10 to get positive x
(-x)(-1)=(-10)(-1)
x=10
answer:
x=10, y=-1
Answer: -2 2/3 < -2.43 < 2.045 < 2 5/9
Hope this helps!
Answer:
y = (- 7/8)*x - 1.5
Step-by-step explanation:
One point is (-4,2) and the other one is (4,-5)
The first step is to find the slope.
m = (y2 - y1) / (x2 - x1)
- y2 = 2
- y1 = -5
- x2 = -4
- x1 = 4
Solution
<em><u>Find the slope</u></em>
m = (2 - - 5) / (-4 - 4)
m = (2 + 5) / (- 8)
m = 7 / - 8
So far what you have is y = (-7/8)x + b
Find the y intercept.
Use (4,-5)
y = (-7/8)x + b
x = 4
y = - 5
-5 = (-7/8) * 4 + b
-5 = -7/2 + b
-5 = - 3.5 + b Add 3.5 to both sides.
-5 + 3.5= - 3.5+ 3.5 + b
- 1.5 = b
If you have answers please list them
Answer:2+2= fish
Step-by-step explanation:
put the first one up side ways this side up --->2 and for the 2nd one this side down ---->2 then it looks like a fish your welcome ugh
The 2.5x would be a proportional relationship
