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olga2289 [7]
2 years ago
12

Which of the following is an equations of the line passing through the points (-1,4) and (1,2)

Mathematics
1 answer:
maxonik [38]2 years ago
6 0

Answer:

y = -1x + 3 or y = -x + 3 (**That is the last option which is D**)

Step-by-step explanation:

You need to do slope-intercept formula and the slope formula.

The Slope-Intercept Formula: y=mx+b

The Slope Formula: y2 - y1 / x2-x1

Your coordinates:

(-1,4) and (1,2)

2 - 4/1- (-1)

-2/2

Simplified is -1

Your "m" in the slope-intercept formula is -1

Formula: y=-1x + b

Now, you need to find the Y-Intercept which is the "b"

Using our slope-intercept formula, you need to plug in "x1" and "y1"

4 = -1(-1) + b

4 = 1 +b

4-1 = b

3 = b

So your equation is:

y = -1x + 3 or y = -x + 3

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An inconsistent linear system has _ solutions
Novay_Z [31]

Answer:

zero im pretty sure

Step-by-step explanation:

6 0
3 years ago
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A car takes 4 hours to reach a destination traveling at a speed of 63 km/h. How long will it take to cover the same distance if
Gre4nikov [31]

Answer:

It will take 4.5hrs to cover the same distance

The constant of variation,k=252

Step by step explanation

Given that,

speed =  \frac{distance}{time}

From the question

Time=4hr

Speed=63km

By substitution we obtain,

63=  \frac{distance}{4}

Cross multiplying we get,

distance=63 \times 4

distance=252km

Now,

speed=56km

Distance Covered=252km

By substitution:

We obtain,

56= \frac{252}{time}

Cross multiply

56\times  time=252

Divide through by 56

time= \frac{252}{56}

time=4.5hrs

From the formula,

speed= \frac{distance}{time}

Which means that, speed and time varies inversely.

speed\propto \frac{1}{time}

Let k be variation constant

This implies that

speed = k \times  \frac{1}{time}

k=speed \times{time}

Taken,

Time=4hrs

speed=56km

k=56\times4

k=252

4 0
2 years ago
Bestie help<br> Ok bestie thank you;)
Juliette [100K]

Answer:

Chloe swam further. 16/40 to 25/40

Step-by-step explanation:

2/5 5/8

Find greatest common factor of 5 and 8 which is 40.

5x8=40 so multiply the same at the top.

2/5=16/40

5/8=25/40

16/40<25/40.

Chloe swam further

7 0
2 years ago
You get a 27% discount on a sweater that is $18 sales tax is 8.4% how much is it after text total cost
Oduvanchick [21]

Answer:

27/100×18=4.86

8.4/100×18=1.512

total is 6.372

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3 years ago
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