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Rudiy27
2 years ago
13

Please answer this question

Mathematics
1 answer:
Anastasy [175]2 years ago
7 0

Answer:

3 cm

Step-by-step explanation:

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PLEASE HELP ASAP
ladessa [460]
1)An equation in the slope-intercept form is written as

y=mx+by=mx+b

Where m is the slope of the line and b is the y-intercept. You can use this equation to write an equation if you know the slope and the y-intercept.

Example

Find the equation of the line

Choose two points that are on the line

Calculate the slope between the two points

<span><span>m=<span>y2−y1x2−x1</span>=<span><span>(−1)−3</span><span>3−(−3)</span></span>=−46=−23</span><span>m=<span>y2−y1x2−x1</span>=<span><span>(−1)−3</span><span>3−(−3)</span></span>=−46=−23</span></span>

We can find the b-value, the y-intercept, by looking at the graph

b = 1

We've got a value for m and a value for b. This gives us the linear function

<span>y=−23x+1y=−23x+1</span>

In many cases the value of b is not as easily read. In those cases, or if you're uncertain whether the line actually crosses the y-axis in this particular point you can calculate b by solving the equation for b and then substituting x and y with one of your two points.

We can use the example above to illustrate this. We've got the two points (-3, 3) and (3, -1). From these two points we calculated the slope

<span>m=−23m=−23</span>

This gives us the equation

<span>y=−23x+by=−23x+b</span>

From this we can solve the equation for b

<span>b=y+23xb=y+23x</span>

And if we put in the values from our first point (-3, 3) we get

<span><span>b=3+23⋅(−3)=3+(−2)=1</span><span>b=3+23⋅(−3)=3+(−2)=1</span></span>

If we put in this value for b in the equation we get

<span>y=−23x+1y=−23x+1</span>

which is the same equation as we got when we read the y-intercept from the graph.

To summarize how to write a linear equation using the slope-interception form you

Identify the slope, m. This can be done by calculating the slope between two known points of the line using the slope formula.Find the y-intercept. This can be done by substituting the slope and the coordinates of a point (x, y) on the line in the slope-intercept formula and then solve for b.

Once you've got both m and b you can just put them in the equation at their respective position.

https://www.mathplanet.com/education/algebra-1/formulating-linear-equations/writing-linear-equations.....


2)https://www.cymath.com/answer?q=6x%20%2B%202y%20%3E%204


3)https://www.cymath.com/answer?q=9x%20%E2%80%93%203y%20%3D%2012

4 0
3 years ago
Read 2 more answers
Ms. O'Malley's cousin lives 1,650 miles away. Ms. O'Malley won a gift card for 100 gallons of gas. If her car can travel 35 mile
Grace [21]
I think so because if she/he has 100 gallons and she/he drives 35 miles than she would have to waist but still have some gas left to use
8 0
3 years ago
Read 2 more answers
A rectangular garden has a length that is six feet more than twice its width. It takes 120 feet of fencing to completely enclose
Marianna [84]

Answer:

The width is 18 and the length is 42

Step-by-step explanation:

7 0
3 years ago
Calculate for y given that mean of 20,2y,25,y,30 is 27​
masha68 [24]

Answer:

y = 218

Step-by-step explanation:

Mean = (Sum of all numbers)/(How many numbers present)

27 = (20 + 2y + 25 + y + 30)/27

27 = (3y + 75)/27

3y + 75 = 729

3y = 729 - 75

3y = 654

y = 218

3 0
3 years ago
If f(x) = 3x + 5 and g(x) = –2x2 – 5x + 3, find (f + g)(x).
vazorg [7]
(f + g)(x) is equal to f(x) + g(x).

So (f + g)(x) = (3x + 5) + (-2x^2 - 5x + 3) = -2x^2 - 2x + 8
which is choice C.
8 0
3 years ago
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