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3 years ago

What is the equation of the line with an x-intercept of -1 and a y-intercept of 2?

Mathematics

2 answers:

Sholpan [36]3 years ago

5 0

Answer:

Equation of line is:

y= 2x+2

Step-by-step explanation:

Let equation of line be y=mx+c

where c is the y-intercept and m is the slope

We are given y-intercept=2

i.e. c=2

x-intercept= -1

i.e. when y=0 , x= -1

Putting y=0, x= -1 and c=2 in y=mx+c

0= -m+2

⇒ m=2

Hence, equation of line is:

y= 2x+2

valina [46]3 years ago

4 0

Y = 2x + 2

This is the equation in the form of y = mx + b.

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A car travels 143km in 2hours 45minutes .Find its speed in km / hour

grin007 [14]

Answer:

52 km/hr

Step-by-step explanation:

Speed equals distance over time.

2 hours 45 minutes = 2.75 hours

S = 143/2.75

S = 52

The car’s speed is 52 kilometers per hour.

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3 years ago

A 9x - 40 B 3x + 20 x = [?]

Mrrafil [7]

Answer:

x = 10

Step-by-step explanation:

9x - 40 = 3x + 20

9x - 3x - 40 = 3x - 3x + 20

6x - 40 = 20

6x - 40 + 40 = 20 + 40

6x = 60

6x / 6 = 60 / 6

x = 10

Now plug the x value in the equation to make the statement true that A is parallel to B.

9x - 40

9(10) - 40

90 - 40

3x + 20

3(10) + 20

30 + 20

Therefore, x = 10 making the statement true that A is parallel to B. Hope this helps and stay safe, happy, and healthy, thank you :) !!

7 0

3 years ago

Read 2 more answers

What’s the answer to the question down below

levacccp [35]

Any linear equation can be written as

y = mx+b

where m is the slope and b is the y intercept

m = 1/2 in this case. It represents the idea that the snow fell at a rate of 1/2 inch per hour. In other words, the snow level went up 1/2 an inch each time an hour passed by.

b = 8 is the y intercept. It's the starting amount of snow. We start off with 8 inches of snow already.

The info "snow fell for 9 hours" doesn't appear to be relevant here.

3 0

3 years ago

If the volume of the bat is 82

Assoli18 [71]

The volume that is left to be filled is approximately: 3,332.6 in.³

<h3>What is the Volume of a Box?</h3>

Volume of a box = (length)(width)(height)

Given the following:

Volume of the bat = 82 cubic in.

Length of box = 30 in.

Width = 18.97 in.

Height = 6 in.

The remaining volume to be filled = volume of box - volume of bat

= (30)(18.97)(6) - 82

= 3,332.6 in.³

Learn more about the volume of a box on:

brainly.com/question/14957364

#SPJ1

4 0

2 years ago

knowing that concentration of solutions of medications can be expressed as percentage, what percentage is a solution that's 20g

Minchanka [31]

Answer:

20%

Step-by-step explanation:

The percentage of the concentration can be calculated by dividing the amount of solute by the total amount of the solution. In this case the solute would be the 20g of medication while the total solution amount is 100ml. Therefore, we divide these two values like so...

20 / 100 = 0.20

This is the percentage in decimal form, we can now multiply it by 100 to get the percentage value (which in this scenario is simply reversing the previous division)

0.20 * 100 = 20%

7 0

3 years ago