M=-9 and goes through (3,4)

Mathematics

1 answer:

Ronch [10]3 years ago

8 0

Answer:

The slope intercept formula is, y=m x + b where m is the slope where b is the y -intercept The slope is the change in y over the change in x. This is commonly known as the riserun. This is also shown as the ΔyΔx. If you have any 2 points on the line than you can also use the formula y2−y- 1x2−x1 The y-intercept is where the line touches or intersects the y-axis. If the x coordinate is zero you can find out what the y-intercept is.

Step-by-step explanation:

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Margaret [11]

Answer:

B and F

Step-by-step explanation:

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3 years ago

[Quick Answer Needed] Which of the following shows the extraneous solution to the logarithmic equation?

Nitella [24]

Answer:

Step-by-step explanation:

Given the logarithmic equation

$\log_4x+\log_4(x-3)=\log_4(-7x+21)$

First, notice that

$x>0\\ \\x-3>0\Rightarrow x>3\\ \\-7x+21>0\Rightarrow 7x$

So, there is no possible solutions, all possible solutions will be extraneous.

Solve the equation:

$\log_4x+\log_4(x-3)=\log_4x(x-3),$

then

$\log_4x(x-3)=\log_4(-7x+21)\\ \\x(x-3)=-7x+21\\ \\x^2-3x+7x-21=0\\ \\x^2+4x-21=0\\ \\D=4^2-4\cdot 1\cdot (-21)=16+84=100\\ \\x_{1,2}=\dfrac{-4\pm 10}{2}=-7,\ 3$