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3 years ago

Which equation describes relationship between X and Y in the table?

Mathematics

2 answers:

Hatshy [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Based off the answers, we are supposed to find the slope. You can tell since the only thing differing between the answers are the slope.

First you take two points and then plug them into the following equation to solve for slope.

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Let's use the points (0, 0) and (4, -1).

$m=\frac{-1-0}{4-0}\\ m=\frac{-1}{4} \\$

Hope this helps! <3

MArishka [77]3 years ago

5 0

Answer: the answer is a

Step-by-step explanation:

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A intercept of 2 and slope of 1/6

Katen [24]

Answer:

what is your question though. if its create an equation, its

y = 1/6x + 2

3 0

2 years ago

Jules has 1200 and is spending 40 per week. kelsey has 400 and is saving 50 a week. in how many weeks, will jules and kelsey hav

expeople1 [14]

After x weeks:
Jules will have: 1,200 + 40 x.
Kelsey will have: 400 + 50 x.
If we want to know in how many weeks will they have the same amount of money, we will make an equation:
400 + 50 x = 1,200 + 40 x
50 x - 40 x = 1,200 - 400
10 x = 800
x = 800 : 10
x = 80
Answer: In 80 weeks they will have the same amount of money.

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2 years ago

Trying to write an equation for line on graph without any numbers given to plug into for slope

umka2103 [35]

In that situation, you use the information you DO have. It's not always
enough to do the job. But often it is, and in that case, you use what you
do have to answer the question or solve the problem.

Sadly, I can't be any more specific than that. You haven't told us what
information you do have ... only what information you don't have.

8 0

3 years ago

the graph shows the speed of a vehicle during the final 50 seconds of a journey at the start of the 50 seconds the speed is k me

Simora [160]

Answer:

a) 27 m/s

b) 30 m/s

c) i) 3

ii) Deceleration

Step-by-step explanation:

The question is not complete, the correct question is given as:

The graph shows information about the speed of a vehicle during the final 50 seconds of a journey. At the start of the 50 seconds the speed is k metres per second. The distance travelled during the 50 seconds is 1.35 kilometres.

(a) Work out the average speed of the vehicle during the 50 seconds

(b) Work out the value of k.

(ii) Describe what this gradient represents

Answer:

The graph is attached. The total time = 50 seconds, total distance = 1.35 km = 1350 m

a) The average speed is the ratio of the total distance traveled to the total time taken to cover this distance. The average speed is given by the formula:

$Average \ speed=\frac{total\ distance}{total\ time}\\ Substituting: \\ Average \ speed=\frac{1350\ m}{50\ s} = 27\ m/s$

b) From the graph, the total distance covered is the area of the graph. The graph is made up of a rectangle and triangle, the area of the graph is equal to the sum of area of rectangle and area of triangle.

$Total \ distance=Total\ area=Area\ of \ rectangle+Area\ of \ triangle\\Total \ distance=(length *breadth)+\frac{1}{2}base*height\\1350 \ m=(40*k)+0.5*10*k\\1350=40k+5k\\45k=1350\\k=1350/45\\k=30\ m/s$ c) i) The gradient in the last 10 seconds is the ratio of change in speed to change in time