The short cut formula for finding equation of two points
(x₁, y₁) and (x₂, y₂)
is:
(y - y₁) / (y₂- y₁) = (x - x₁) / (x₂ - x₁).
Substituting: x₁ = -3, y₁ = 2, x₂ = 7, y₂ = -1
(y - 2) / (-1 - 2) = (x - -3) / (7 - -3)
(y - 2) / -3 = (x + 3) / (7 + 3)
(y - 2) / -3 = (x + 3) / 10
10*(y - 2) = -3*(x +3)
10y - 10*2 = -3*x - 3*3
10y - 20 = -3x - 9
10y + 3x = -9 +20
10y +3x =11
Hence equation is: 10y + 3x = 11
Hope this explains it.
Multiple (5x+y= 28) by 6 giving you 30x +6y =168 and then you would add the two equations together, giving you 38x = 152, divide both sides by 38, giving you 4. after this, you would sub x=4 into one of the equations (i’m using the 5x+ y =28) which would give me 20 + y = 28, subtract 20 by both sides, giving you y= 8. so your answer is (4,8)
Step-by-step explanation:
A2 + b2 = (a +b) (a-b)
Putting values
a2 +. b2 = (12)(8)
a2 + b2 = 96
If you are given the volume then you can solve
v=volume
h=height
l=legnth
w=width
hlw means h times l times w
v=hlw
so to find height divide both sdie sby lw
v/lw=hlw/lw
v/(lw)=h
so just divide volume by the quantity lengh times width
if you were given the volume