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Alex73 [517]
3 years ago
9

If X + 2Y =18 , how am I supposed to find the slope if I don't know how to find the x intercept?

Mathematics
2 answers:
Lyrx [107]3 years ago
8 0
X+2y=18
-x      -x
2y=-x+18
/2   /2  /2

y=mx+b
y=-1/2x+9


the slope is -1/2
ch4aika [34]3 years ago
3 0
You solve for y. you dont need the x intercept 
x+2y=18
2y=-x+18
divide everything by two
y=-1/2x+9
the slope would be -1/2 
since in the equation y=mx+b 
m represents the slope which in this case would be -1/2
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Twice the difference of a number and 2 is equal to three times the sum of the number and 3. Find the number. The number is nothi
trasher [3.6K]

The number is -13.

In order to find this, we first need to make each part of the statement into a mathematical statement.

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2(x - 2)

Three times the sum of the number and 3

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Now we can set them equal to each other and solve.

2(x - 2) = 3(x + 3) ----> Distribute

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3 0
3 years ago
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serious [3.7K]

Answer:

i think its B

Step-by-step explanation:

3 0
3 years ago
PLEASE HELP!
Alexus [3.1K]

Answer:

4x+5y-34=0

Step-by-step explanation:

The slope-intercept form of a line is y=mx+b where m is the slope and b is the y-intercept.

My goal is to put in in this form first.  Then I will aim to put it in general form, ax+by+c=0.

So let's give it a go:

m is the change of y over the change of x.

To compute this I'm going to line my points up and subtract vertically, then put 2nd difference over 1st difference.  Like this:

( 1 , 6)

-(6 , 2)

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-5   4

So the slope is 4/-5 or -4/5.

So m=-4/5.

Now we are going to find b given y=mx+b and m=-4/5 and we have a point (x,y)=(1,6) [didn't matter what point you chose here].

6=-4/5 (1)+b

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Add 4/5 on both sides:

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30/5+4/5=b

34/5=b

So the y-intercept is 34/5.

The equation in slope-intercept form is:

y=-4/5 x + 34/5.

In general form, it is sometimes the goal to make all of your coefficients integers so let's do that.  To get rid of the fractions, I'm going to multiply both sides by 5.  This clears the 5's that were on bottom since 5/5=1.

5y=-4x+34

Now add 4x on both sides:

4x+5y=34   This is standard form.

Subtract 34 on both sides:

4x+5y-34=0

8 0
3 years ago
Read 2 more answers
I need to distribute 5(y+3)=35
Anit [1.1K]
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7 0
3 years ago
A certain city with population of 132,000 is to be divided into 11 voting districts, and no district is to have a population tha
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Answer: Therefore, Option 'D' is correct.

Step-by-step explanation:

Since we have given that

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Let the number of population that the least populated district could have be 'x'.

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Therefore, Option 'D' is correct.

4 0
3 years ago
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