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3 years ago

Write the equation of a line whose slope is -2 and goes through the point (1,-1)

Mathematics

1 answer:

scoundrel [369]3 years ago

8 0

Answer:

y= -2x+1

Step-by-step explanation:

y=mx+b

Substitute the ordered pairs into the equation

So:

y= -1 m(slope) = -2 x=1 b=?

-1 = (-2)(1) + b

-1 = -2 +b add 2 on both sides to get b by itself

-1 +2 = b

b=1

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Convert the polar coordinates (3, -5 pi/3). to rectangular coordinates.

beks73 [17]

Answer:

See below

Step-by-step explanation:

x = 3 cos (-5pi/3) = 1.5

y = 3 sin (-5pi/3) = 2.598

6 0

2 years ago

0.563as a fraction is 56/100. hope you get it right because I did

iogann1982 [59]

0.563 as a fraction would be 563/1000

8 0

3 years ago

The inequality -9<21 is given. Write the inequality you get when you perform the following operation.

Iteru [2.4K]

Answer:

3 > -7

Step-by-step explanation:

-9 < 21

/-3 /-3

------------

3 < -7

Now, whenever you divide or multiply by a negative, you will change the inequality sign.

So, 3 < -7 becomes 3 > -7

4 0

3 years ago

Read 2 more answers

The coordinates of point A are (-6, -10) and the coordinates of point B are (x,-4). The distance between A to point B is 10 unit

vlabodo [156]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ A(\stackrel{x_1}{-6}~,~\stackrel{y_1}{-10})\qquad B(\stackrel{x_2}{x}~,~\stackrel{y_2}{-4})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ 10=\sqrt{[x-(-6)]^2+[-4-(-10)]^2}\implies 10=\sqrt{(x+6)^2+(-4+10)^2} \\\\\\ 10^2=(x+6)^2+(6)^2\implies 100=x^2+12x+36+36 \\\\\\ 100=x^2+12x+72\implies 0=x^2+12x-28 \\\\\\ 0=(x+14)(x-2)\implies x= \begin{cases} -14\\ \boxed{2} \end{cases}$

because B is on the IV Quadrant, the x-coordinate must be positive.

7 0

3 years ago

Sketch the graphs:<br> y=-x+5

luda_lava [24]

Answer:

This is the graph I inputted into desmos.

Step-by-step explanation:

Next time, using a graphing calculator will work! However, making a table for the x and y outputs will also make it easier to graph points.

For example: see attached image of table.

6 0

4 years ago