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3 years ago

What is the equation of the line that passes through the point (-5,-3) and has a slope of -1?

Mathematics

2 answers:

atroni [7]3 years ago

7 0

substitute x and why for the values in the coordinates

y = -x +b

-3 = --5 +b

-3 = 5+b

subtract 5 from both sides

-8 = b

snow_lady [41]3 years ago

3 0

Answer:

the answer for line eq is y= -x-8

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3 years ago

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3 years ago

The value of x in the equation log(x-1)9=2 is

mel-nik [20]

$\log_{(x-1)} 9=2$

the domain:
$x-1 >0 \ \land \ x-1 \not=1 \\
x>1 \ \land \ x \not= 2 \\
x \in (1; 2) \cup (2;+\infty)$

the equation:
$\log_{(x-1)}9=2 \\
(x-1)^2=9 \\
\sqrt{(x-1)^2}=\sqrt{9} \\
|x-1|=3 \\
x-1=3 \ \lor \ x-1=-3 \\
x=4 \ \lor \ x=-2$

4 is in the domain
-2 is not in the domain

The answer:
$x=4$

***
Also, the answer in 13 is {8}. -3 is not in the domain. Replace x with -3 and you'll see:
$x=\sqrt{5x+24} \\
-3=\sqrt{5 \times (-3)+24} \\
-3=\sqrt{-15+24} \\
-3=\sqrt{9} \\
-3=3$
It's not true so -3 isn't a solution to this equation.

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What is the equation of the line that passes through the point (-5,-3) and has a slope of -1?​

What is the equation of the line that passes through the point (-5,-3) and has a slope of -1?