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eduard
3 years ago
9

Please help!!

Mathematics
1 answer:
Soloha48 [4]3 years ago
3 0

Step-by-step explanation:

Given points are:

(-1,\:3)=(x_1,\: y_1) \:\&\:(1, \:7)=(x_2,\:y_2)

Equation of line in two point form is given as:

\frac{y-y_1 }{y_1 - y_2}  =  \frac{x-x_1 }{x_1 - x_2} \\  \\  \therefore \:  \frac{y - 3}{3 - 7}  =  \frac{x - ( - 1)}{ - 1 - 1}  \\  \\ \therefore \:  \frac{y - 3}{ - 4}  =  \frac{x  + 1}{ - 2}  \\  \\ \therefore \:  \frac{y - 3}{ 2}  =  \frac{x  + 1}{ 1}  \\  \\ \huge \purple{ \boxed{\therefore \:y - 3 = 2(x + 1)}} \\ this \: is \: the \: equation \: of \: line \: in \:  \\ point - slope \: form.\\simplifying \: it \: further \: we \: find: \\  y - 3 = 2x + 2 \\  \\ \therefore \:y = 2x + 2 + 3 \\  \\  \huge \red{ \boxed{\therefore \:y = 2x + 5}} \\ this \: is \: the \: equation \: of \: line \: in \:  \\  slope - intercept \: form.

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pogonyaev

Hello,

52% of 230 = 52/100 × 230 = 0,52 × 230 = 119,6

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2 years ago
HELP QUICK! worth extra points
Vikentia [17]

Answer: <em>3w+4b</em>

Step-by-step explanation:

<em>Take your given equation</em>

<em>w+w+w+b+b+b+b</em>

<em>There are 3 w's and 4 b's</em>

<em>Combine like terms</em>

<em>w+w+w=</em><em>3w</em>

<em>b+b+b+b=</em><em>4b</em>

<em>3w+4b</em>

3 0
3 years ago
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Find the equation of the line with a slope of 4 and passing through (0,3)
Simora [160]

4x -  y + 3 =0 is the equation of the line

Step-by-step explanation:

Given:

The slope of the line  =  5

The points through with the line passes = (0,3)

To Find:

The equation of the line  =?

Solution:

The equation  y = mx + b

where m is the slope and (0,b) is the y-intercept.

The slope is given which is m = 4 and a point (0,3)

Then you can use slope-point equation

y - y_o = m(x - x_o)

where (x_o,y_o) is the given point

y - (3) = 4(x - 0)

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9. what is the measure of QSR
Scilla [17]
<h3>Answer:  C) 142 degrees</h3>

=======================================================

Explanation:

Extend segment MN such that it intersects side ST. Mark the intersection as point A. See the diagram below.

We're given that angle MNT is 72 degrees. The angle TNA is equal to 180-(angle MNT) = 180 - 72 = 108 degrees, since angles MNT and TNA add to 180.

For now, focus entirely on triangle TNA. We see from the diagram that T = 34 and we just found that N = 108. Let's find angle A

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A = 180-142

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So angle NAT is 38 degrees.

----------------------------

Since segment MA is an extension of MN, and because MN || SQ, this means MA is also parallel to SQ.

We found at the conclusion of the last section that angle NAT was 38 degrees. Angles QST and NAT are corresponding angles. They are congruent since MA || SQ. This makes angle QST to also be 38 degrees

----------------------------

The angles QSR and QST are a linear pair, so they are supplementary

(angle QSR) + (angle QST) = 180

angle QSR = 180 - (angle QST)

angle QSR = 180 - 38

angle QSR = 142 degrees

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