(-1,4)(3,-4)
slope = (-4 - 4) / (3 - (-1) = -8/)3 + 1) = -8/4 = -2
y - y1 = m(x - x1)
slope(m) = -2
(3,-4)...x1 = 3 and y1 = -4
now we sub
y - (-4) = -2(x - 3) =
y + 4= -2(x - 3) <====
Answer:
first do:
60mph * 4 hours= 240mi
Let D = the distance the passenger train has to
travel to catch the freight train
Start a stopwatch when the passenger train leaves
Let t = the time on the stopwatch when they meet
Equation for freight train:
d-240=60t
Equation for passenger train:
d=100t
all together:
100t-240=60t
we can do 100t-60t because they both have (t)= 40t
40t=240 *now divide 240 by 40= 6
THEN do:
D= 100mph x 6= 600mi
They will meet 600 mi from the station
to check:
d-240=60t x 6
600-240= 360
60 x 6= 360
360=360
Answer:
5
Step-by-step explanation:
perimiter of rectangle is 3+7+7+3 = 20
square x+x+x+x=20
4x=20
x=20/4
x=5
Answer:
x=28
Step-by-step explanation:
|28-x|=0
|28-28|=0
x=28
Answer: 4
Step-by-step explanation:
The power of the brain
