All categories

4 years ago

What is the equation?

Mathematics

2 answers:

Temka [501]4 years ago

8 0

Answer:

Step-by-step explanation:

Put it into slope form

y=mx+b

distribute the -3 from (y+1) = -3 (x-1)

y+1 = -3x +3

subtract the 1

y=-3x +2

tatyana61 [14]4 years ago

4 0

Answer:

y+2 = -3(x-1)

Step-by-step explanation:

We take 2 points and we can find the slope

(0,2) and (2,-4)

m = (y2-y1)/ (x2-x1)

= (-4-2)/(2-0)

= -6/2

= -3

The slope is -3

We can use point slope form to make an equation. We want to use the point (1, -2)

y-y1 = m(x-x1)

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

y+2 = -3(x-1)

You might be interested in

Anita pays $20.70 to copy an 18 page report. What is the cost for each page?

Ivanshal [37]

Answer:

1.15

Step-by-step explanation:

20.7 divided by 18 equals 1.15

3 0

4 years ago

What is the reason for step 3 of this proof?

Lunna [17]

We have to prove that Quadrilateral ABCD is a parallelogram.

The third step is m AEB = mCED

As ABCD is a quadrilateral, the point of intersection of diagonals being E.

In the first step while proving it is written that Diagonals bisect each other i.e

AE = EC and BE= ED

After drawing the quadrilateral it is being found that ∠AEB and ∠CED are vertically opposite angles.

Out of the given five options option (D) is the correct option. which is vertical angles theorem.

vertical angle theorem states that if two lines intersect at a point ,then their vertically opposite angles are equal.

4 0

3 years ago

Read 2 more answers

Which graph represents the piecewise function? x+3 if x<0 2x if x ≥ 0

kolbaska11 [484]

Answer:

Graph 1 will be the correct one.

Step-by-step explanation:

We are given the piece wise function defined as

f(x) = x + 3 for x < 0 and f(x) = 2x for x ≥ 0

The first part of the function does not include x = 0.

And, this is in slope-intercept form.

So, slope is 1 i.e. tan Ф = 1, ⇒ Ф = 45°.

And it has y-intercept at (0,3).

So, the conditions are shown in graphs 1 and 3.

Now, the second part of the function equation passes through origin {As the equation is f(x) = 2x}

So, only graph 1 matches both the conditions.

Therefore, graph 1 will be the correct one. (Answer)

7 0

3 years ago

I need help in like 1 minute pleaseee

stellarik [79]

It’s 88 not sure tho your welcome

3 0

3 years ago

A group of 100 students took a quiz. Their average score was 76 points. If the average score for the boys was 80 points and the

sveta [45]

Answer:

The number of girls participated in quiz is 40 .

Step-by-step explanation:

Given as :

Total number of students took quiz = 100

Average score of 100 students = 76 points

The Average score of boys = 80 points

The Average score of girls = 70 points

Let The number of boys participated in quiz = b

Let The number of girls participate in quiz = g

Now, According to question'

Total number of students took quiz = number of boys participated in quiz + number of girls participated in quiz

Or, b + g = 100 ........A

Again

∵ Average score of 100 students = 76 points

∴ Total score of 100 students = 76 × 100 = 7600

So, Average score of boys × number of boys participated + Average score of girls × number of girls participated = Total score of 100 students

Or, b × 80 + g × 70 = 7600

Or, 80 b + 70 g = 7600 .........B

Now, Solving equation A and B

(80 b + 70 g ) - 70 ×( b + g ) = 7600 - 70 × 100

I.e (80 b - 70 b) + (70 g - 70 g) = 7600 - 7000

Or, 10 b + 0 = 600

∴ b = $\dfrac{600}{10}$

i.e b = 60

So, The number of boys participated in quiz = b = 60

Put the value of b into eq A

∵ b + g = 100

So, g = 100 - b

Or, g = 100 - 60

i.e g = 40

So, The number of girls participated in quiz = g = 40

Hence, The number of girls participated in quiz is 40 . Answer

6 0

3 years ago