All categories

3 years ago

I need help solving this

Mathematics

1 answer:

pentagon [3]3 years ago

5 0

Y=mx+b where m=slope=(dy/dx) and b=y-intercept (value of y when x=0)

You have two points...(1,-2),(3,2) so

m=(y2-y1)/(x2-x1)=(2--2)/(3-1)

m=4/2=2 now that you have the slope...

y=2x+b, you can use either point to solve for the y-intercept, I'll use (3,2)

2=2(3)+b

2=6+b

b=-4 so the line is:

y=2x-4

You might be interested in

A certain one-day seminar consisted of a morning session and an afternoon session. If each of the 128 people attending the semin

Elena L [17]

Answer:

16 people

Step-by-step explanation:

This is a set problem

let first session be a

let second session be b

128 people attended at least one session = a∪b

a. 3/4 attended both session 1&2 = a∩b

b. 7/8 attended session 2 = p(b) i.e population b

c x attended session 1 = p(a) i.e. population a

lets get the figures.

For both sessions 3/4 × 128 = 96 = a∩b
For second session 7/8 × 128 = 112 = b
The formular is a∪b = p(a) + p(b) - a∩b
a∪b = 128 (they at least one session)

lets substitute into the equation

let p(a) be x

128 = x + 112 - 96

128 = x + 16

x = 112 - no of people that attended the morning session.

But to find those that ONLY attended morning session

x - a∩b

112 - 96 = 16

3 0

3 years ago

Read 2 more answers

Anyone please like explain.

AlexFokin [52]

Answer:

i cant see it can you get a batter pic

Step-by-step explanation:

4 0

3 years ago

I NEED SOME HELP AGAIN PLS

ozzi

Answer:

The y-intercept is (26, 0)

Step-by-step explanation:

The Y intercept is the point at which the line crosses the y-axis, or when x is equal to zero. Here when x = 0, y = 26. So the y-intercept is (26, 0). They want to trick you into choosing the slope is -1/6, but that is wrong because id you look at the x-axis it is not going by 1's.

3 0

3 years ago

Read 2 more answers

Three security cameras were mounted at the corners of a triangular parking lot. Camera 1 was 106 ft from camera 2, which was 133

Harrizon [31]

Correct Answer:
Option C. Camera 2

The greatest angle is always opposite to the side measure greater in length. So first we find the greatest side.

The distance between cameras is:

Camera 1 and Camera 2 : 106 feet
Camera 2 and Camera 3 : 133 feet
Camera 1 and Camera 3 : 151 feet

So the largest side of the triangle is the side between camera 1 and camera 3. So the camera opposite to this side will have to cover to greatest angle. The camera opposite to this side is Camera 2. This scenario is also shown in figure below.

Therefore, Camera 2 had to cover the greatest angle.

5 0

3 years ago

Edward deposited $7,000 into a savings account 4 years ago. The simple interest rate is 5%. How much

Oliga [24]

answer: $1,440

explanation: here’s the equation with the values in this case

>> interest = 7,000 x 0.05 x 4

after multiplying, you get 1,440, which is the simple interest

**tip: turn the rate/percent into a decimal, then multiply

8 0

3 years ago