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1 year ago

What is an equation of the line that passes through the points (2,-3) and (1,0)?

Mathematics

2 answers:

Eddi Din [679]1 year ago

4 0

Answer:

If you use y=mx+b you will find that the equation is:

y=-3x+3

Step-by-step explanation:

mixer [17]1 year ago

3 0

Answer:

y=-3x+3

Step-by-step explanation:

1: subract one of the y from the other one 0--3, or 0+3=3

2: Do the same with the x of the right y 1-2=-1

3: put the solution to the y over the solution to the x 3/1-

4: simplify -3

5: write out what you now know y=-3x+b

6: fill in y and x with one of the points -3=-3(2)+b

7: Solve

a) Combine like terms -3=-6+b

b) add 6 to both sides 3=b

8: write out the problem with everything you know y=-3x+3

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What is the inverse of the function f(x) = x – 12?

SashulF [63]

$y=x-12\\
x=y+12\\
f^{-1}(x)=x+12$

7 0

3 years ago

1. Dorothy bought a teddy bear and sold it at a 20% profit to Kim. Kim bought a suit costing $100 and dressed the teddy bear up

makkiz [27]

1. Dorothy paid $200 for the teddy bear

2. y is more than x by $33\frac{1}{3}$ %

Step-by-step explanation:

1. The given is:

Dorothy bought a teddy bear and sold it at a 20% profit to Kim
Kim bought a suit costing $100 and dressed the teddy bear up in the suit
Kim then sold the teddy bear in the suit to Karen for $442
Kim made a profit of 30%

We need to find how much Dorothy paid for the teddy bear

Assume that Dorothy bought a teddy bear for $x

∵ Dorothy bought a teddy bear for $x

∵ She sold it at a profit 20% to Kim

By using the ratio method

→ Buying price : Profit : Selling price

→ 100% : 20% : 120% ⇒ (100% + 20%)

→ x : : ?

By using cross multiplication

∴ 100% × Selling price = x × 120%

- Divide both sides by 100%

∴ Selling price = 1.2x

∴ Dorothy sold the teddy bear for $1.2x to Kim

∵ Kim bought a suit costing $100 and dressed the teddy bear

up in the suit

∴ The cost of the teddy bear = 1.2x + 100

∵ Kim sold the teddy bear in the suit to Karen for $442

∵ Kim made a profit of 30%

By using the ratio method

→ Cost price : Profit : Selling price

→ 100% : 30% : 130% ⇒ (100% + 30%)

→ 1.2x + 100 : : 442

By using cross multiplication

∴ (1.2x + 100) × 130% = 100% × 422

- Divide both sides by 130%

∴ 1.2x + 100 = 340

- Subtract 100 from both sides

∴ 1.2x = 240

- Divide both sides by 1.2

∴ x = 200

∴ Dorothy bought the teddy bear for $200

Dorothy paid $200 for the teddy bear

2. The given is:

x is less than y by 25%
Then y is more than x by how many percent

Assume that y is 100%

∵ y = 100%

∵ x is less than y by 25%

∴ x = 100% - 25%

∴ x = 75%

- The percentage of increasing of y = $\frac{y-x}{x}$ × 100%

∵ The percentage of increasing of y = $\frac{100-75}{75}$ × 100%

∴ The percentage of increasing of y = $\frac{25}{75}$ × 100%

∴ The percentage of increasing of y = $\frac{1}{3}$ × 100%

∴ The percentage of increasing of y = $33\frac{1}{3}$ %

y is more than x by $33\frac{1}{3}$ %

Learn more:

You can learn more about the ratio in brainly.com/question/4713715

#LearnwithBrainly

6 0

3 years ago

Square root of 5625

devlian [24]

Answer:

Step-by-step explanation:

75 × 75 = 5625

75² = 5625

6 0

3 years ago

Read 2 more answers

Carrie ate some of the oranges that her mother brought home from the grocery store of the oranges her mother bought 1/4 were lef

Whitepunk [10]

From the given scenario, it can be deduced that Carrie ate 3/5 of what was left of the oranges that were left. To determine the fraction that Carrie ate, we will multiply 3/5 by 1/4. This is equal to 3/20. Thus, Carrie ate approximately 3/20 of the oranges left.

3 0

3 years ago

Does anyone know the awnser to this problem?

ASHA 777 [7]

x y

1 16

2 12

3 8

5 0

Step-by-step explanation:

you have to substitute ever number on the X side in the equation to get the Y

for example 1 is under x so you will take

y=20-4(1)

y=20-4

y=16

3 0

2 years ago