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Scorpion4ik [409]
3 years ago
14

What is the equation of a line with a slope of -2 and passes through the point 3,5¿

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0
Y - y₁ = m(x - x₁)
y - 5 = -2(x - 3)
y - 5 = -2(x) + 2(3)
y - 5 = -2x + 6
  + 5          + 5
     y = -2x + 11
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42x+25y=486, x+y=14<br>show work please help asap!​
ruslelena [56]
Rewrite equations:
x+y=14;42x+25y=486

Step: Solvex+y=14for x:
x+y=14
x+y+−y=14+−y(Add -y to both sides)
x=−y+14

Step: Substitute−y+14forxin42x+25y=486:
42x+25y=486
42(−y+14)+25y=486
−17y+588=486(Simplify both sides of the equation)
−17y+588+−588=486+−588(Add -588 to both sides)
−17y=−102
−17y
−17
=
−102
−17
(Divide both sides by -17)
y=6

Step: Substitute6foryinx=−y+14:
x=−y+14
x=−6+14
x=8(Simplify both sides of the equation)

On Fri, Sep 20, 2019 at 12:08 PM ESQULESE BLACK wrote:

3 0
3 years ago
Which statement best describes the relationship between x and y in the equation y = 3x? A. The value of y is three less than the
7nadin3 [17]

Answer:

b

Step-by-step explanation:

Y is three times the value of x , It can be said that y is directly proportional to Y .

Direct proportion is when an increase in the independent variable causes an increase in the dependent variable.

the equation for direct proportion is :

y = bx

y = dependent variable

b = constant

x = independent variable

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=%28%20-%203%29%20%7B%7D%5E%7B2%7D%20.%28%20-%203%29%20%20%7B%7D%5E%7B2%7D%20" id="TexFormula1"
liq [111]
The answer is 81. since (-3)^2 is 9. Therefore, 9x9=81.
4 0
3 years ago
Sierra sawed 10 1/2 inches off the end of a board. the remaining board was 37 1/2 inches long. how long was the boared that sier
ivann1987 [24]
37 1/2 +10 1/2 = 48 inches
48 inches is your answer ;)

6 0
3 years ago
If z varies directly as x and z=30 when x=8 find z when x=4
dangina [55]
Z=kx, 30=8k, so k=30/8=15/4 and z=15x/4, so when x=4, z=15.
8 0
3 years ago
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