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IgorLugansk [536]
3 years ago
7

Answers to all and how to do

Mathematics
1 answer:
cestrela7 [59]3 years ago
6 0
1) 4-3/2-1                               
m=1
b=2
y=x+2

2)7-10/-1-2
m=1
b=8
y=x+8

3)8-13/1-2
m=5
b=3
y=5x+3

4)1-3/8-4
m=-1/2
b=5
y=-1/2x+5
go here for the rest.
www.wikihow.com/Find-the-Equation-of-a-Line
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Xanthia can read 100 pages per hour and Molly can read 50 pages per hour. If they each read the same book, and the book has 225
Talja [164]

Answer:

135 minutes

Step-by-step explanation:

Let

y -----> the number of pages to finish reading the book

x ----> the number of hours

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the unit rate or slope of the linear equation

b is the y-intercept or initial value

In this problem we have

<em>Xanthia</em>

m=100\ pages/hour

b=225\ pages

y=-100x+225 ----> the slope is negative because is a decreasing function

For y=0

substitute and solve for x

0=-100x+225

100x=225

x=2.25\ hours ---> Xanthia's time to finish reading the book

<em>Molly</em>

m=50\ pages/hour

b=225\ pages

y=-50x+225 ----> the slope is negative because is a decreasing function

For y=0

0=-50x+225

50x=225

x=4.5\ hours --- Molly's time to finish reading the book

To find out how many more minutes than Xanthia would it take for Molly to finish reading the book, subtract Xanthia's time from Molly's time

4.5\ h-2.25\ h=2.25\ h

Convert to minutes

Multiply by 60

2.25\ h=2.25(60)=135\ minutes

4 0
2 years ago
Read 2 more answers
Write each equation in slope-intercept form of the equation of a line. Underline the slope and circle the y-intercept in each eq
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Answer:

see below:

Step-by-step explanation:

2y–6=0

a.  slope intercept form using y = mx + b

   y = 6/2

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b.  slope: use the slope intercept form: y = mx + b

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c.  y-intercept = (0,3)

7 0
3 years ago
Pls help I’ll brainlest <br><br> Complete the activities below
DanielleElmas [232]

Answer:

Step-by-step explanation:

( x_{1} , y_{1} )

( x_{2} , y_{2} )

rate of change or slope m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} } = \frac{rise}{run}

y = mx + b

"b" is y-intercept

~~~~~~~~~~~~~~~~~~~

7 0
2 years ago
Will the answer above be always true for any two consecutive time​ periods, not necessarily of equal​ length?
Elenna [48]

Answer:

It will always be true

Step-by-step explanation:

4 0
3 years ago
3r+(7+8)/(t-3)when r=4, s=3 and t=5
mars1129 [50]

Answer:

19.5

Step-by-step explanation:

3r+(7+8)/(t-3)

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6 0
2 years ago
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