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ycow [4]
3 years ago
6

Find the equation of a line that has the same slope ask why equals 10-4x and the same Y intercept is why equals -9x-8

Mathematics
1 answer:
Alborosie3 years ago
3 0

Answer:

y=-4x-8

Step-by-step explanation:

we know that

The equation of the line in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

so

1) Find the slope of the given line y=10-4x

The slope is m=-4

2) Find the y-intercept of the given line  y=-9x-8

The y-intercept is b=-8

therefore

The equation of the line with

m=-4

b=-8

is equal to

y=-4x-8

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A model rocket is launched with an initial upward velocity of 126 ft/s. The rocket's height h (in feet) after 1 seconds is given
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Step-by-step explanation:

f(t) = -16t² + 126t

for what values of t did this function deliver 50 ft of height ?

50 = -16t² + 126t

-16t² + 126t - 50 = 0

the general solution to such a squared equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = t

a = -16

b = 126

c = -50

t = (-126 ± sqrt(126² - 4×-16×-50))/(2×-16) =

= (-126 ± sqrt(15876 - 3200))/-32 =

= (-126 ± sqrt(12676))/-32 =

= (-126 ± 112.5877436...)/-32

t1 = (-126 + 112.5877436...)/-32 = -13.41225644.../-32 =

= 0.419133014... ≈ 0.42 seconds

t2 = (-126 - 112.5877436...)/-32 = -238.5877436.../-32 =

= 7.455866986... ≈ 7.46 seconds

so, this means, right after launch the ticket reaches 50ft (from below) after 0.42 seconds, and then, when it falls back down, it will reach 50ft again (this time from above) after 7.46 seconds of flight time.

3 0
2 years ago
How do you find the vertex if the equation is given ingiven in factored form?
lidiya [134]
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Once you have this x value, subst. the value into the given equation to calculate y.  Then write the vertex as (x,y).
7 0
3 years ago
Just two more thanks for all the help thus far
guapka [62]

Answer:

The answer can be calculated by doing the following steps;

Step-by-step explanation:

3 0
3 years ago
A line passes through the points (2,2) and (5,8). What is its equation in slope-intercept form?
Vsevolod [243]

Answer:

y=2x+6

Step-by-step explanation:

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Plug slope and first set of coords into point-slope intercept form

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Answer:

4 more

Step-by-step explanation:

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3 years ago
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