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vaieri [72.5K]
3 years ago
13

What is the slope of the line that passes through the points (0, –7) and (–4, 3)?

Mathematics
1 answer:
Furkat [3]3 years ago
8 0

-5/2 is the slope of thosr points

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What is the equation of this graphed line?
Arturiano [62]

Answer:

y = -1/3x - 5

Step-by-step explanation:

Use rise over run to find the slope: (y2 - y1) / (x2 - x1)

Plug in the points:

(y2 - y1) / (x2 - x1)

(-7 + 3) / (6 + 6)

-4 / 12

= -1/3

Plug in the slope and a point into y = mx + b, and solve for b:

y = mx + b

-3 = -1/3(-6) + b

-3 = 2 + b

-5 = b

Plug in the slope and b into y = mx + b

y = -1/3x - 5 is the equation of the line

8 0
3 years ago
Read 2 more answers
Can someone please help me with this
solmaris [256]

Step-by-step explanation:

sum of all angles = 360

7x-4 = 360

7x= 364

x = 52

angle j = 150

angle k = 62

angle m = 100

8 0
2 years ago
6. Andre and Elena are each saving money. Andre starts with $100 in his savings account and adds $5 per week. Elena starts with
lora16 [44]

You need to write an equation for each.

For Andre, he has 100 dollars, and every week gets 5 dollars more. You add the 5 dollars, and Since you don't know how many weeks it has been, use a variable.

100 + 5w

For Elena, she has 10 dollars, and gets 20 each week.

10 + 20w

Now that you know that it has been 4 weeks, you can plug in 4 for the variable for weeks.

Andrew:

100 + 5(4) = 100 + 20 = 120

Elena

10 + 20(4) = 10 + 80 = 90

Andrew has more money in this time.

To find when they have the same amount, equal their expressions to each other. This means that they will have the same amount (because they are equalled) and you can solve to find the variable, which means the weeks that they are equal at.

Bring the like terms to each side by canceling them out. Since you have positive 10, then subtract 10 to each side. You have 5w, so subtract 5w to each side.

100 + 5w = 10 + 20w \\ 90 + 5w = 20w \\ 90 = 15w \\ 90 \div 15 = 6 \\ 6 = w

The answer will simplify down to 6 weeks.

3 0
2 years ago
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An object travels 4/5 mile in a half in hour. What is its speed?
goldfiish [28.3K]
The rate(speed) is 1 3/5

We can use the distance formula to solve:
d= rt
D= 4/5
T=1/2 hr

Substitute

4/5= 1/2t

Multiply 2 on both sides
2* (4/5)=(1/2)t * 2

8/5=t

We can simplify this to 1 3/5
8 0
3 years ago
Analyzing graphs: Please fill in the following based on the graph. Seriously need help with this ASAP please!
Mariana [72]

Answer:

continous!

- infinite<x<infinte

y<=1

zeros at -4 and-2

(-infinite, -3)

(-3,infinite)

4 0
3 years ago
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