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sleet_krkn [62]
3 years ago
8

Someone Please Help Quickly! Its an Easy Question

Mathematics
1 answer:
Paul [167]3 years ago
7 0

Answer:

y=\frac{2}{3}x-6

Step-by-step explanation:

Use the slope-intercept form:

y=mx+b

m is the slope and b is the y-intercept. Looking at the graph, you can find the y-intercept. The y-intercept is the point where x equals 0:

b=-6

y-intercept=(0,-6)

To find the slope, take any two points from the line:

(6,-2)(3,-4)

Use the slope formula for when you have two points:

\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{rise}{run}

The rise over run is the change in the y-axis over the change of the x-axis. Insert the appropriate values:

(6(x_{1}),-2(y_{1})\\(3(x_{2}),-4(y_{2})

\frac{-4-(-2)}{3-6}

Simplify parentheses (two negatives makes a positive):

\frac{-4+2}{3-6}

\frac{-2}{-3}

Simplify (two negatives make a positive):

m=\frac{2}{3}

The slope is \frac{2}{3} and the y-intercept is -6. Insert these into the equation:

y=\frac{2}{3}x-6

Finito.

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Write each equation in slope intercept form Underline the slope and circle the y intercept in each equation 5x + 3y = 30
Sav [38]

Answer:

y=-5/3x+10

-5/3

(0,10)

Step-by-step explanation:

5x+3y=30

-5x. -5x

3y=-5x+30

÷3. ÷3

y=-5/3x+10

the number by the x is the slope and the constant

is the y intercept. in a y intercept the x=0 and they y=the constant which is 10 in this case making it (0,10)

4 0
3 years ago
Find the missing coefficients <br><br><br>y=ax^2-10x+c <br>vertex :(-5,20)
Citrus2011 [14]
Remember, for y=ax^2+bx+c the x value of the vertex is \frac{-b}{2a}

so
given
x value of vertex is -5
and
y=ax^2-10x+c
\frac{-b}{2a}=\frac{-(-10)}{2a}=\frac{10}{2a}=
\frac{5}{a}=-5
multiply both sides by a
5=-5a
divvide both sides by -5
-1=a
a=-1


y=-1x^2-10x+c
comlete the square
remember if we do
y=a(x-h)^2+k (h,k) is the vertex
I know, we can subsitute the known values of te vertex
-5 for h and 20 for k then expand

y=-1(x-(-5))^2+20
y=-1(x+5)^2+20
y=-1(x^2+10x+25)+20
y=-1x^2-10x-25+20
y=-1x^2-10x-5

a=-1
c=-5
5 0
3 years ago
A scale has a percent error of 5%. The actual mass of a rock is 258 g.
Semmy [17]

The scale is likely to show the mass is either 270.9g or 245.1g

Step-by-step explanation:

Actual mass = 258g

Percent error = 5% = ±0.05

Mass shown by scale = Actual mass*percent error

Mass\ shown\ by\ scale=258*(\±0.05)\\Mass\ shown\ by\ scale=\±12.9g

Therefore,

Mass shown by scale = 258+12.9 , Mass shown by scale = 258-12.9

Mass shown by scale = 270.9g , Mass shown by scale = 245.1g

The scale is likely to show the mass is either 270.9g or 245.1g

Keywords: error, percentage

Learn more about percentages at:

  • brainly.com/question/11286417
  • brainly.com/question/11566221

#LearnwithBrainly

6 0
3 years ago
Write 72 as a product of primes.<br> Use index notation where appropriate.
stiv31 [10]

Hi there!

~

The prime factorization for <u>72</u> is <u>2×2×2×3×3 </u>

Hope this helped you!

4 0
3 years ago
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Which is correct and explain
skad [1K]

Answer:

c

Step-by-step explanation:

7 0
2 years ago
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