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3 years ago

CLICK ON THISS!!!!!!!!

Mathematics

1 answer:

Assoli18 [71]3 years ago

6 0

Answer:

I did itttttt:0

Step-by-step explanation:

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Bond [772]

Answer:

3) y = 3x

Step-by-step explanation:

a line equation is typically written as

y = ax + b

a is the slope, the inclination of the line. it is defined as ratio of "y coordinate change / x coordinate change" when going from one point to another on the line.

so, e.g. going from (0,0) to (4,12) means

x changes by +4 (from 0 to 4)

y changes by +12 (from 0 to 12)

so, the slope is +12/+4 = 3

and the line equation starts like this

y = 3x + b

now, b is the y-intercept : the y value, where the line intercepts (crosses) the y-axis. in other words, the y value where x = 0.

and we have that right away, as the line goes through (0,0). that IS the y-intercept point. the y value there is 0.

therefore, b=0.

and so the full line equation is

y = 3x

5 0

2 years ago

Write the equation in vertex form: Vertex is (1.-3) and passes through the point (-1,5)

boyakko [2]

Answer:

y = 2(x - 1)² - 3

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (1, - 3), thus

y = a(x - 1)² - 3

To find a substitute (- 1, 5) into the equation

5 = a(- 1 - 1)² - 3

5 = (- 2)²a - 3 ( add 3 to both sides )

8 = 4a ( divide both sides by 4 )

a = 2

Thus

y = 2(x - 1)² - 3 ← in vertex form

6 0

4 years ago

Ini bagaimana ya? Tolong caranya dong.

zaharov [31]

Answer:

Step-by-step explanation:

8 0

3 years ago

Erin wants to carpet the floor of her closet. A floor plan of the closet is 4ft x 10ft x 3ft x 6ft. How much carpet does Erin ne

yKpoI14uk [10]

1720 ft^2 you just need to times all the numbers together.

7 0

3 years ago

The lines represented by the equations 25y

gogolik [260]

Answer:

C: The Same Line

Step-by-step explanation:

So to start we need to first know what makes lines parallel or perpendicular. Two parallel lines will have the same slope, but different y-intercepts because we know they never cross. Two perpendicular lines will have opposite-reciprocal slopes, because we know that they intersect at a right angle.

Then, we need to know the slope-intercept form of an equation. The slope intercept form is $y=mx+b$ where $m$ is the slope of the line and $b$ is the y-intercept. We can see that neither equation is in this form, so we have to convert it.

Starting with the first, (I assume despite the typo) we have $25y+10x= 200$

So we need to isolate the $y$ from everything else.

First, we'll subtract $10x$ from both sides of the equal sign to get $25y=-10x+200$

Second, we'll divide both sides by $25$ to get $y=-\frac{2}{5} x+8$

This means that $-\frac{2}{5}$ is the slope and $8$ is the y-intercept of the first line.

Now onto the second we have $5y+2x=40$ so we're going to follow the same steps to isolate $y$ .

First, we'll subtract $2x$ from both sides to get $5y=-2x+40$

Second, we'll divide both sides by $5$ to get $y=-\frac{2}{5}x +8$

This means that $-\frac{2}{5}$ is the slope and $8$ is the y-intercept of the second line.

Since both of the lines have a slope $-\frac{2}{5}$ we know that they are parallel, so we need to check to check if they're the same by looking at the y-intercept. We can see that $8$ is the y-intercept of both lines, so they would be the same line.

7 0

3 years ago