All categories

3 years ago

Find an equation of the line L. L is perpendicular to y=-2x and is passing through points 2,-4

Mathematics

1 answer:

galina1969 [7]3 years ago

6 0

slope of line y= -2x is -2

slope of line L= (-1)reciprocal of slope line y= -2x.

=( -1)(-1/2)

=1/2

since the L passes through (2,-4),

equation of line L: y-(-4)= 1/2(x-2)

2y+8 = x-2

x-2y-10=0

Hence equation of line L is x-2y-10=0

You might be interested in

Find the product of (3.7 * 104) and 2. 74 x 103 0.74 x 10 4 74x10 74 x 104 *

padilas [110]

Answer:

your answer is 7.4 X 104 and if you further multiply then you will get 769.6

4 0

3 years ago

3in x 8in x 5in = ? using cubic squares!!

KonstantinChe [14]

Answer:

120

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Look at the two expressions. 3x−18 3⋅(x−6) Are the two expressions equivalent?

Ivanshal [37]

Yes because if you distribute the 3 and multiply it with 3 • x and 3• 6 you’ll get 3x-18

8 0

3 years ago

Read 2 more answers

NEED HELP ASAP!!!!!!!!!!!

Ivanshal [37]

Answer:

a. $\frac{x + 3}{21}=\frac{x + 1}{15}$

b. x = 4 (see steps below)

Step-by-step explanation:

Since the two polygons are similar, the sides are proportional to each other. Using a proportion, you can solve for 'x' using cross-multiplication and division:

$\frac{smaller}{larger}=\frac{x + 3}{21}=\frac{x + 1}{15}$

Cross-multiply: 15(x + 3) = 21(x + 1)

Distribute: 15x + 45 = 21x + 21

Subtract '15x' from both sides: 15x + 45 - 15x = 21x + 21 - 15x or 45 = 6x + 21

Subtract '21' from both sides: 45 - 21 = 6x + 21 - 21 or 24 = 6x

Divide by 6 on both sides: 24/6 = 6x/6

Solve for x: x = 4

4 0

3 years ago

What is the correct value of f(-1) if f(x) = 2x2 – 3x – 9

Zina [86]

Answer:

-is a 4x ala 2 -3x -9

-or 4x2 -3x1-9x

4 0

3 years ago

Read 2 more answers