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4 years ago

What is the equation in point slope form, for a line that goes through (-4, -1) and (5, 7) brainly

Mathematics

2 answers:

nexus9112 [7]4 years ago

7 0

first we have to find the slope Y2-Y1/ X2- X1

7-(-1)=8

5-(-4)=9 slope= 8/9

Poin slope form ------- Y-Y =M(X-X)

Y+7= 8/9 (X+5) or

Y-1= 8/9 (X-4)

Shtirlitz [24]4 years ago

4 0

Hello!

Explanation:

Slope-intercept form: → $y=mx+b$

m: represents the slope and is constant.

b: represents the y-intercept.

Rise/run

$\frac{rise}{run}$

$m=\frac{y^2-y^1}{x^2-x^1}$

$\frac{7-(-1)=7+1=8}{5-(-4)=5+4=9}=\frac{8}{9}$

<u><em>8/9 is the final answer. </em></u>

Hope this helps!

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ZA and B are supplementary angles. If mA (x - 9)° and

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The measurement of ∠B is 168°

Given,

In the question:

Angle A and Angle B are supplementary angles.

If mA (x - 9)° and m/B= (7x + 21)°

To find the measure of ∠B

Now, According to the question;

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Two angles are Supplementary when they add up to 180 degrees.

Now, ∠A+∠B = 180°

So,

⇒(x - 9)˚+(7x + 21)°=180°

=> 8x +12 = 180°

=> 8x = 180° - 12

=> 8x = 168

=> x = 168/8

=> x = 21

For the measure of ∠B :

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∠B = 168°

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Learn more about Supplementary angles at:

brainly.com/question/13045673

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4 years ago

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3 years ago

Eric and Charles are on their high school track and field team. Eric is participating in hurdles and the javelin. For every 5 ho

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Answer: Charles practiced for 9 hours for the relay race last week.

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Since we have given that

For every 5 hours that Eric spends practicing hurdles, he practices the javelin for 1.5 hours.

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Now, we have also given that ,

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It means Charles practiced javelin for 4.5 hours .

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4 years ago