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MrRa [10]
3 years ago
15

3. Write an equation of the line that passes through (-2, 8) and (4,4).

Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0

y =  -  \frac{2}{3} x +  \frac{20}{3}

Step-by-step explanation:

y=mx+c

label your points

(-2;8). pnt2

(4;4). pnt1

m =  \frac{y2 - y1}{x2 - x1}

m =  \frac{8 - 4}{ - 2 - 4}

m =  \frac{  4}{ - 6}

m = -   \frac{2}{3}

substitute gradient and 1 point into equation to get c

8 = ( -  \frac{2}{3} )( - 2) + c

8 =  \frac{4}{3}  + c

c = 8 -  \frac{4}{3}

c =  \frac{20}{3}

Therefore the equation is

y =  -  \frac{2}{3} x +  \frac{20}{3}

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4+ -1 2/3 please help
kogti [31]

The sum would end us as: 2.33333333

3 0
3 years ago
Read 2 more answers
Lacey has a 20% off coupon for Bed Bath and Beyond She wants to buy a beach towel priced at $15. If she uses her coupon what is
horsena [70]
10% of $15 = 15/10= 1.5
1.5 x 2= 3 = 20%
15-3=12
Therefore the towel will be $12 with a 20% of coupon
8 0
3 years ago
HELP ASAP!!! DUE SOON!!!<br> 7 7/8 - 3 9/16​
jeka57 [31]

Answer:

4 5/16

Step-by-step explanation:

7 7/8 - 3 9/16

7 14/16 - 3 9/16

4 5/16

4 0
3 years ago
Read 2 more answers
1. round the result to 2 decimal places. -0.9x+2.8=4.1
lora16 [44]
1. <span>-0.9x+2.8=4.1
First subtract 2.8 from both sides.
-0.9x = 1.3
Now divide both sides by -0.9.
x = -1.4444..
This can be rounded to -1.44
</span><span>c) -1.44

2. Jordan has 650 pennies. He'll give 85 to his brother and split the rest with his sister.
</span>d) 85+2x=650
5 0
3 years ago
Anyone know the answer ?
notka56 [123]

Answer:

3/4

Step-by-step explanation:

sin = opposite/hypotenuse

one side is 3, hypotenuse side is 5.

using the pythagorean theorem, we know that the third side is 4.

tan = opposite/adjacent

tanθ = 3/4

5 0
3 years ago
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