1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AnnyKZ [126]
3 years ago
15

the line passing through point (4, -1) and perpendicular to the line whose equation is 2x - y - 7 = 0

Mathematics
1 answer:
ch4aika [34]3 years ago
7 0

Answer:

y = -x/2 + 1

Step-by-step explanation:

Step 1: find the slope

2x - y - 7 = 0

2x - 7 = y

y = 2x - 7

Equation of a line is y = mx + c

m = slope

m = 2

Note: if two lines are perpendicular to the other, both lines are negative reciprocal of each other

Therefore m = -1/2

Step 2: using a point slope form

y - y1 = m( x - x1)

( 4 , -1)

x = 4

y = -1

y - (-1) = -1/2(x - 4)

y + 1 = -1/2(x - 4)

Open the bracket

y + 1 = -x + 4 / 2

y = (-x + 4) / 2 - 1

LCM = 2

y = -x + 4 - 2 / 2

y = (-x + 2)/2

Separate the two, so as to get the slope and the intercept

y = -x/2 + 2/2

y = -x/2 + 1

The equation of the line is

y = -x/2 + 1

You might be interested in
Pls help me with 19,20 pls thx and show me how u did it
Anastasy [175]
For number 19:
"at least 150" means either 150 ≤ ?  or ? ≥ 150

plus 3 so +3x

The answer would be 150 ≤ 100 + 3x

Number 20:

A is at -2.5. The inverse is the opposite so 2.5
7 0
3 years ago
A gallon of water weighs 8.354 pounds. Simon uses 11.81 gallons of water while taking a shower. About how many pounds of water d
Mamont248 [21]
8.354 x 11.81= 98.66074
Simon used 98.66074 pounds of water while taking a shower.
8 0
3 years ago
Find the missing value (x)
Semenov [28]

Answer:

y=14; x=72

Step-by-step explanation:

y=(21×2)/3; x=(48×21)/14

3 0
2 years ago
the ratios of girls to boys in a student basketball league is 5:6. juan says that there must be exactly 11 students in the leagu
Alex787 [66]

Answer:

False

Step-by-step explanation:

girls : boys : total

5       : 6      :11

Multiply each term by 2

10:      12     :22

Ratio of girls to boys

10:12

Divide by 2

5:6

The ratio of girls to boys is still 5:6  but the total students is 22

8 0
3 years ago
Read 2 more answers
X / x-2 + x-1 / x+1 = -1 <br><br> Im really confused, please show all steps
Yakvenalex [24]
I cant access paper right now so i can only give the answer

x= 0,1 
3 0
3 years ago
Other questions:
  • The number of trucks registered in a city increases by 10% each year. initially, there were 100 trucks registered. there were 11
    6·2 answers
  • A bargain bin contains classical and rock and CDs. There are 60 CDs in the bin. Choosing a rock CD have the same number of favor
    7·1 answer
  • Can someone help me please???
    14·1 answer
  • What does PEMDAS stand for?
    14·2 answers
  • Write an expression for the calculation subtract 10 divided into fifths from 20 divided in half.​
    8·2 answers
  • Answer this question please and thank you
    6·1 answer
  • Please answer!!!!! I will give brainliest!
    8·1 answer
  • Work out the value of six squared plus three cubed
    11·1 answer
  • Factor the expression below.
    8·2 answers
  • Peter earns $12.40 each week for doing his chores .Ria earns 1.2 times as much money per week as Peter. How much do Ria earn eac
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!