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2 years ago

Write an equation in point slope form through the point (3,-1) with a slope of 2

Mathematics

1 answer:

klio [65]2 years ago

8 0

Answer:

$y+1 = 2 (x -3)$

Step-by-step explanation:

Point slope form is

$y - y_{1}=m(x-x_{1})$

The points you have are (3, -1). The 3 is $x_{1}$ and the -1 is $y_{1}$

The slope, m, is 2.

Plugin the numbers for the variables.

$y - -1 = 2 (x -3)\\y + 1 = 2 (x - 3)$

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The track and field coach records Ian's 400-meter race times during three practices. How much greater was the percent of change

BigorU [14]

Answer:

d. 1.5%

Step-by-step explanation:

Given - The track and field coach records Ian's 400-meter race times during three practices.

Practice 1 2 3

Time (s) 63 60 58

To find - How much greater was the percent of change from Practice 1 to Practice 2 than from Practice 2 to Practice 3? Round to the nearest tenth.

a. 7.9%

b. 4.8%

c. 3.3%

d. 1.5%

Proof -

% change from Practice 1 to Practice 2 change = $\frac{60 - 63}{63}. 100$ %

= $-\frac{3}{63}.100$ % = - 4.761904762 %

⇒% change from Practice 1 to Practice 2 change = - 4.762 %

Now,

% change from Practice 2 to Practice 3 change = $\frac{58 - 60}{60}. 100$ %

= $-\frac{2}{60}.100$ % = - 3.334 %

⇒% change from Practice 2 to Practice 3 change = - 3.3334 %

So,

- 4.461904762% - (- 3.3334%) = -4.461904762 + 3.3334 % = -1.4285 % ≈ 1.5%

∴ we get

Value = 1.5%

The correct option is - d. 1.5%

4 0

3 years ago

FIND THE SLOPE OF ALL + y-intercept TO BE MARKED BRAINLIEST 1) y=-1/2x-1 2) y=5/2x-5 3)y=-7/4x-5 4)y3/2x-1 5)y=x+4 6)y=-1/5x+2

CaHeK987 [17]

Answer:

Step-by-step explanation:

i had this question

6 0

3 years ago

If the velocity of a bicycle is 10 m/s how long will it take to cover a distance of 18 km<br>

Sergeeva-Olga [200]

Answer:

time taken=1800 seconds

Step-by-step explanation:

velocity=v=10m/s

distance=S=18km=18×10³m=18000m

t=?

as we know that

velocity= $\frac{distance covered}{time taken}$

velocity×time taken=distance covered

now here we have to find time

time taken= $\frac{distance covered}{velocity}$

time taken= $\frac{18000m}{10m/s}$

time taken=1800seconds

6 0

2 years ago

Hell please and thank you !!!!

Wittaler [7]

Answer:

2.7

Step-by-step explanation:

x^2=5.8*1.3=7.54

x=V7.54=2.7

4 0

2 years ago

Read 2 more answers

Jorge finds 56% of his 75 classmates likes salsa music and 80% of his 60 relatives like salsa music.How many more of Jorge’s rel

erica [24]

56% of 75 = 42
80% of 60 = 48

The question asks for the difference, so there are 6 additional people who like salsa music

5 0

3 years ago