Answer:
y = 
x + 3
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (4, 5)
m = 
= 
=
Note the line crosses the y- axis at (0, 3) ⇒ c = 3, thus
y = x + 3 ← equation of line
Answer:
Step-by-step explanation:
let x be the population
so we have ,
2x= 6h
?= 3 days or 3×24h
by cross multiplication we have
2x× 72h= 6h×?
?= 2x×72/6 = 24x
So, in three days the bacteria will b 24 times current population.
Answer:
y=0.8x
Step-by-step explanation:
take two points from the graph
(5,4) and (0,0)
then do y2-y1/x2-x1
4-0/5-0
4/5=.8
L= length= 2w+4
w= width
P= perimeter= 7w-3
SOLVE FOR WIDTH
Perimeter of a Rectangle Formula
P= 2(l + w)
7w - 3= 2((2w + 4) + w)
combine like terms in parentheses
7w - 3= 2(3w + 4)
multiply 2 by parentheses
7w - 3= (2*3w) + (2*4)
multiply in parentheses
7w - 3= 6w + 8
add 3 to both sides
7w= 6w + 11
subtract 6w from both sides
w= 11 width
LENGTH
l= 2w + 4= 2(11) + 4= 22 + 4= 26
PERIMETER
P= 7w-3= 7(11) - 3= 77 - 3= 74
CHECK
74= 2(26 + 11)
74= 2(37)
74= 74
ANSWER: The length is 26, the width is 11 and the perimeter is 74.
Hope this helps! :)
