REALLY URGENT!!! Question: Find the equation of the line specified.

Perpendicular to 3x + y = -7 and passing through (1,8)

(i really need an explanation on how to do this)


REALLY URGENT!!!

Question: Find the equation of the line specified.
Perpendicular to 3x + y = -7

lizzepacheco   ·   14.10.2021 15:10
ANSWER(S)
26.06.2019 01:30

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

Me it is my last question and i don’t want to get it wrong standard deviation
answered: 2020kaylahernan
26.06.2019 00:00
Is 8.50 an answer or no? ?
answered: nalisas8329
24.06.2019 14:00

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

answered: Gabby2581
14.10.2021 15:10

y=\frac{1}{3}x+7.6666

Step-by-step explanation:

First we must convert  3x+y=-7 into slope-intercept form!

To do this we simply just need to subtract -3x from the 3x on the left and move it to the right side. This would result in: y = -3x-7

Now that we have our slope-intercept form for the equation remember that to find the equation that is perpendicular to the given equation, you need to use the opposite reciprocal of the slope. This would be \frac{1}{3} as that is the reciprocal and opposite of -\frac{3}{1}

Now in order to find the "b" variable of the equation that goes through the ordered pair (1, 8) we need to plug it in to the given equation!

That equation would be: y=\frac{1}{3}x-7

Given that x = 1 and y = 8 we can plug those in like so:

8=\frac{1}{3}(1)+b

(make sure to set the -7 to b as that's what we're solving for)

1 / 3 is 0.3333 (infinitely repeating)

Next we need to subtract 0.3333 from 8, which would be 7.6666 (infinitely repeating) Remember that the variable needs to be "alone"!

Now we have our "b" for the equation! Hence the equation would be:

y=\frac{1}{3}x+7.6666

(you can also use \frac{23}{3} for the b as that is the "exact form" of 1 / 3 but they both work)

Hope this helps! Feel free to ask questions!

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