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3 years ago

-3x+9y=-27 in y-intercept form

Mathematics

1 answer:

dybincka [34]3 years ago

3 0

Mx+y=b so is gotta be b if im wrong im sorry

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On the graph shown, what is the slope ?

mr_godi [17]

Answer:

3/4

Step-by-step explanation:

To find the slope using a line on a graph, calculate the difference between two points. To do so, use the formula y2 - y1/x2 - x1.

Two points on this line are (0, -1) and (4, 2). This means:

y2 = 2

y1 = -1

x2 = 4

x1 = 0

Plugging those values in, we get:

2 - (-1)/4 - 0

Evaluating 2 - (-1) and 4 - 0, we get 3/4. Therefore, the slope is 3/4.

8 0

3 years ago

What is the sum of a seven-term geometric series if the first term is -2, the last term is

ExtremeBDS [4]

Answer:

-26042

Step-by-step explanation:

sum of a finite geometric series =

$\frac{a_1(1-r^n)}{1-r}$

here, a1 is the first term, r is the common ratio, and n is the number of terms

a1 = -2

r = -5

n = 7

$\frac{a_1(1-r^n)}{1-r} = \frac{-2(1-(-5)^7)}{1-(-5)} = -26042$

8 0

2 years ago

PLEASE HELP!!!!!! ILL GIVE BRAINLIEST *EXTRA 40 POINTS** !! DONT SKIP :((

kumpel [21]

Answer:

no? I think yeah I think it is

4 0

2 years ago

Does the equation 3x-6y=0 represent a direct variation? *

slega [8]

Answer:

yes

Step-by-step explanation:

if you change it to standard form, it would be

y=1/2x

because it's in the format of y=ax then it is direct variation

5 0

3 years ago

Point A is at (-2,-7) and point M is at (2.5, -1.5).

algol [13]

Answer:

B(7 , 4)

Step-by-step explanation:

(x₁ , y₁) = A(-2 , -7)

(x₂ , y₂) = Point B

Midpoint(5.5, -1.5)

$Midpoint= (\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})\\\\\\(\frac{-2+x_{2}}{2} , \frac{-7+y_{2}}{2} = (2.5 , -1.5)$

Compare x-coordinates & y-coordinates

$\frac{-2+x_{2}}{2}=2.5 ; \frac{-7+y_{2}}{2}=-1.5$

-2+ x₂ = 2.5*2 ; -7+ y₂ = -1.5*2

-2+ x₂ = 5 ; -7 +y₂ = -3

x₂ = 5 +2 ; y₂ = -3 + 7

x₂ = 7 ; y₂ = 4

B(7 , 4)

3 0

2 years ago