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2 years ago

Find the equation of the line with a slope of -3, passing through the point (2,5).

Mathematics

1 answer:

Alexxx [7]2 years ago

8 0

Y = -3(2) + 11
y = -6 + 11
y = 5

Answer is a) y = -3x + 11 , when x is 2 y is 5

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How could the relationship of the data be classified? (1 point) a fairly strong positive correlation a fairly weak positive corr

sladkih [1.3K]

Where's the data lol

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2 years ago

Solve the equation. x2 18x 81 = 25 a. 14, 4 b. –4, –14 c. 14, –14 d. –4, 4

Snowcat [4.5K]

Answer:

The answer is the option B

$-4,-14$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}+18x+81=25$

$x^{2}+18x+56=0$

$a=1\\b=18\\c=56$

substitute in the formula

$x=\frac{-18(+/-)\sqrt{18^{2}-4(1)(56)}} {2(1)}$

$x=\frac{-18(+/-)\sqrt{100}} {2}$

$x=\frac{-18(+/-)10} {2}$

$x1=\frac{-18+10} {2}=-4$

$x2=\frac{-18-10} {2}=-14$

7 0

2 years ago

Read 2 more answers

Which number is written in scientific notation?

Elis [28]

If I'm right it could be C. IF I'M RIGHT, I'm not totally sure but I hope this helps.

4 0

2 years ago

Y= 3x-1 2x+6=y substitution method

vfiekz [6]

Answer: (7, 20)

Concept:

There are three general ways to solve systems of equations:

Elimination
Substitution
Graphing

Since the question has specific requirements, we are going to use substitution to solve the equations.

Solve:

Given equations

y = 3x - 1

2x + 6 = y

Substitute the y value since both equations has isolated [y]

2x + 6 = 3x - 1

Add 1 on both sides

2x + 6 + 1 = 3x - 1 + 1

2x + 7 = 3x

Subtract 2x on both sides

2x + 7 - 2x = 3x - 2x

$\boxed{x=7}$

Find the value of y

y = 3x - 1

y = 3(7) - 1

y = 21 - 1

$\boxed{y=20}$

Hope this helps!! :)

Please let me know if you have any questions

3 0

2 years ago

Read 2 more answers

What is the equation that best matches the graph ?

NemiM [27]

Answer:

Step-by-step explanation:

notice that the graph has a vertical asymptote.

to find a VA, you set the denominator = 0.

since the VA is at x = 5, choice A is the only one with a denominator that = 0 when 5 is plugged in

4 0

2 years ago