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3 years ago

How do you find the point-slope formula for this problem? (-1,7); m= -4

Mathematics

1 answer:

Nadya [2.5K]3 years ago

7 0

Answer:

y-7 = -4(x+1)

Step-by-step explanation:

The point slope formula is

y-y1 = m(x-x1) where m is the slope and (x1,y1) is a point on the line

y-7 = -4(x--1)

y-7 = -4(x+1)

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I need to graph -3x+2y=4

hammer [34]

-3x + 2y = 4
2y = 3x + 4
y = 3/2x + 2

so ur slope is 3/2 and ur y int is (0,2)

ur x int can be found by subbing in 0 for y and solving for x
-3x + 2(0) = 4
-3x = 4
x = -4/3...so ur x int is (-4/3,0)

so plot ur x and y intercepts (0,2) and (-4/3,0)....and start at (-4/3,0) and since ur slope is 2, go up 2 spaces and to the right 1 space, then up 2 spaces, and to the right 1 space...keep doing this and u should cross the y axis at (0,2)

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4 years ago

The function h(n) describes the total amount of money a movie theater receives for n tickets sold.

vaieri [72.5K]

Answer:

Let x be the amount of money

and n be the number of tickets:

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7 0

3 years ago

Linda throws a dart that hits the square shown below: A square is drawn. A circle of radius 9 units touches the sides of the squ

nataly862011 [7]

Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.

<h3>What is Probability?</h3>

The probability helps us to know the chances of an event occurring.

$\rm{Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}$

As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.

Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.

Area of the circle with a given radius of 9 units,

$\text{Area of the circle} = \pi r^2$

$\rm = \pi \times (9^2)\\\\= 81\pi\ units^2$

Area of the square with sides equal to the diameter of the circle,

$\rm \text{Area of square} = side^2$

$\rm = Diameter ^2\\\\= (2 \times radius)^2\\\\= (2 \times 9)^2\\\\= 18^2\\\\= 324\ units^2$

Now, the probability that the dart hits a point in the circle can be written as,

$\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\Probability=\dfrac{\text{Area of the circle}}{\text{Area of square}}\\\\\\Probability=\dfrac{81 \pi}{324} = 0.7857$

Hence, the probability of Linda's dart hitting the circle is 0.7857.

Learn more about Probability:

brainly.com/question/795909

3 0

2 years ago

What is the defination of focus of a parabola on a coordinate grid

AleksAgata [21]

Answer:

Focus of a Parabola. A parabola is set of all points in a plane which are an equal distance away from a given point and given line. The point is called the focus of the parabola and the line is called the directrix. The focus lies on the axis of symmetry of the parabola.

Step-by-step explanation:

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3 years ago

What is the range of f(x) = c?<br> O<br> {0}<br> 0 (-00,00)<br> {c}<br> [0, 0)

Marta_Voda [28]

0,0 is your answer because it looks like eyes and a nose

5 0

3 years ago