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2 years ago

5

Look at screenshot answer question and i will mark you brainliest

1 answer:

GaryK [48]2 years ago

5 0

Answer:

$y= -3x+9$

Step-by-step explanation:

We can easily see from the graph that the equation intersecs the x-axis at p=3 and the y-axis at q=9. Now there is a trick to quickly write the equation in these situations, and it is

$\frac xp + \frac yq = 1$ where p and q are the length of the segments (with their sign!!) the line cuts from the origin.

At this point, it's just a matter of writing the equation in the wanted form:

$\frac x3 + \frac y9 =1\\9\frac x3 + y = 9\\y= -3x+9$

Which is the equation you want.

If you prefer a more traditional approach, you can determine the slope right away by noticing that when the y coordinate moves from 9 to 0, ie it decreases by 9, the x coordinate goes from 0 to 3, and the slope is $m= {\Delta y \over \Delta x} = {{-9}\over{3}} = -3$

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HELP I WILL MARK YOU AS A BRAINLIEST!

vfiekz [6]

$6.90 divided by 3 is $2.30 which is the unit rate and if you multiply $2.30 by 10 you get $23

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2 years ago

Read 2 more answers

Find the distance between the points (0, 10) and (–9, 1).

dimulka [17.4K]

$\\ \sf\longmapsto \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\\ \sf\longmapsto \sqrt{(-9-0)^2+(1-10)^2}$

$\\ \sf\longmapsto \sqrt{(-9)^2+(-9)^2}$

$\\ \sf\longmapsto \sqrt{81+81}$

$\\ \sf\longmapsto \sqrt{162}$

$\\ \sf\longmapsto 12.42$

5 0

2 years ago

Please help me!!Will mark brainlyist

svet-max [94.6K]

Answer:

~64 meters

Step-by-step explanation:

depending on how you go at this, you can get a variant of what i have, but it should not go over 70 meters. nor under 60 meters.

7 0

2 years ago

Ms . Rice needs to replace the 166.25 ft of edging on the flower beds in his back yard.The edging is sold in lengths of 19 ft ea

cricket20 [7]

Answer:

Ms. Rice need to purchase 9 lengths of edging.

Step-by-step explanation:

Length of edging Ms. Rice need to replace = 166.25 ft

Length of edging lengths sold = 19 ft

Total number of lengths of edging Ms. Rice needs to purchase = $\frac{length\ to\ be\ replaced}{edging\ lengths}= \frac{166.25}{19}= 8.75$

Since she would purchase whole lengths so it would rounded to 9 in number.

∴ Ms. Rice need to purchase 9 lengths of edging.

6 0

2 years ago

The quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90. The quantity de

kolezko [41]

Given that the quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90.

If we set quantity=y and price=x then in point form, we can write above information as (90,200)

Similarly "The quantity demanded for 1,200 units when the unit price is set at $40. " can be written as (40,1200)

Now we can plug both points into two point formula to find the required equation:

$\frac{y-y_1}{x-x_1}=\frac{y_2-y_1}{x_2-x_1}$

plug those points

$\frac{y-1200}{x-40}=\frac{200-1200}{90-40}$

$\frac{y-1200}{x-40}=\frac{-1000}{50}$

$\frac{y-1200}{x-40}=-20$

y-1200=-20(x-40)

y-1200=-20x+800

y=-20x+2000

Hence demand equation is y=-20x+2000

3 0

3 years ago