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emmasim [6.3K]
3 years ago
15

Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points) Part B: Write the equ

ation for the line of best fit in slope-intercept form and use it to predict the number of games that could be won after 13 months of practice. Show your work and include the points used to calculate the slope. (5 points)

Mathematics
2 answers:
bogdanovich [222]3 years ago
7 0
A. The approximate y intercept appears to be about 1.8 (slightly less than 2). What this tells us is that someone with 0 months of practice could expect to win around 1.8 games.

B. Using slope intercept form and assuming that the y intercept is at (0, 1.8), the equation can be solved for by finding the slope first and then putting the slope and the y intercept into the equation.

Slope (m):
points (0, 1.8) and (1, 3.0)
(Y2-y1)/(x2-x1)=(3.0-1.8)/(1-0)=1.2/1=1.2

Equation:
Y=mx+b
Y=1.2x+1.8
Stella [2.4K]3 years ago
7 0
<h2>Answer with explanation:</h2>

<u>PART A:</u>

We know that the y-intercept of a line is the y-value of the point where the x-value is zero i.e. it the place where it intersects y-axis.

Based on the graph we see that  the line of best fit intersects the y-axis very close to 1.8.

Hence, the approximate y-intercept of the line of best fit is: 1.8

It represents that 1.8 baseball games were won when they did not do any practice i.e. initially.

<u>PART B:</u>

We know that the slope-intercept form of a line is given by:

                  y=mx+b

where m is the slope of the line and b is the y-intercept of the line.

The y-intercept here is: 1.8

The line of best fit passes through (0,1.8) and (6,13)

Hence, the slope is:

m=\dfrac{13-1.8}{6-0}\\\\\\m=1.8667

   Hence, the slope intercept form is:

             y=1.8667x+1.8

Now we are asked to find the value of y when x= 13

i.e.

y=1.8667\times 13+1.8\\\\y=26.0671

which is approximately equal to 26 games.

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Answer:

Graph of a function on the domain negative 2, 6 and range negative 3, 4. Graph increases from negative 2, 3 until 2, 0 and from 4, negative 2.5 to 6, 4. Graph decreases from 2, 0 to 4, negative 2.5. There are x intercepts at 2, 0 and 4, negative 2.5.

Find the x-value where f attains its absolute minimum value on the closed interval from x = -2 to x = 6. Justify your answer.

Step-by-step explanation:

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3 years ago
Two-step equations - integers
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Question 1. -3 + v5 = 0
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5v = 3 ( divide )
answer v = 3/5

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3 years ago
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Hello, Im Chloe, Can you help me? THANK YOU! I will give Brainlest
kotykmax [81]

Answer:

503.47

Step-by-step explanation:

uhhh 3+1 is 4

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Mrs. Jackson bought 2/3 pound of bananas at $.51 per pound, 1 1/4 pounds of peaches for $2.00 per pound, 1/2 gallon of orange ju
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Answer:

$11.47

Step-by-step explanation:

In order to calculate Mrs.Jackson's total we first need to turn the fractions into decimals by simply dividing the numerator by the denominators like so...

2/3 = 0.66

1 1/4 = 1.25

1/2 = 0.50

Now we need to multiply each products cost by the amount they bought in decimal form, then finally add them all together...

($0.51 * 0.66) + ($2 * 1.25) + ($4.50 * 0.50) + ($3.19 * 2) = x

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3 years ago
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What equation do I need to use?
goldenfox [79]
To ease your problem, consider "L" as you x-axis
Then the coordinate become:
A(- 4 , 3)   and B(1 , 2) [you notice that just the y's changed]

This is a reflection problem.
Reflect point B across the river line "L" to get B', symmetric of B about L.
The coordinates of B'(1 , -1) [remember L is our new x-axis]
JOIN A to B' . AB' intersect L, say in H
We have to find the shortest way such  that AH + HB = shortest.
But HB = HB' (symmetry about L) , then I can write instead of 
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