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3 years ago

Write an equation of the form y = mx for the line shown below.

Mathematics

1 answer:

djyliett [7]3 years ago

7 0

Answer:

y = -3x

Step-by-step explanation:

To get slope intercept, you divide both y values by both x values like this

$\frac{y_2 - y_1}{x_2 - x_1}$

In this case this will be $\frac{(-3 - 6)}{(1 - (-2))}$

This will become $\frac{-9}{3}$

Divide those two to get -3, and now you get your slope intercept.

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The value of 5 in the number 357.21 is

Mamont248 [21]

Its 50, its in the 10s place

4 0

3 years ago

v={x,y,z} such that the points satisfies x-2y+3z=0. is v vector space? if not,find all for which v is not a victor space

atroni [7]

Yes, the set of vectors

V = {(x, y, z) : x - 2y + 3z = 0}

is indeed a vector space.

Let u = (x, y, z) and v = (r, s, t) be any two vectors in V. Then

x - 2y + 3z = 0

and

r - 2s + 3t = 0

Their vector sum is

u + v = (x + r, y + s, z + t)

We need to show that u + v also belongs to V - in other words, V is closed under summation. This is a matter of showing that the coordinates of u + v satisfy the condition on all vectors of V:

(x + r) - 2 (y + s) + 3 (s + t) = (x - 2y + 3z) + (r - 2s + 3t) = 0 + 0 = 0

Then V is indeed closed under summation.

Scaling any vector v by a constant c gives

cv = (cx, cy, cz)

We also need to show that cv belongs to V - that V is closed under scalar multiplication. We have

cx - 2cy + 3cz = c (x - 2y + 3z) = 0c = 0

so V is need closed under scalar multiplication.

5 0

3 years ago

matt has started a car washing business to save money for college. each week he washes three more cars than the week he did befo

lisabon 2012 [21]

So what is the question??? If I understand correctly....

y = 3x

8 0

3 years ago

Read 2 more answers

it costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Stells [14]

Answer:

$10.64

Step-by-step explanation:

We know that 1 pound, costs $4.25, so to begin I added that together. And gave myself 8.50. Now, we know that we have 2 pounds. We need 2.5 so, I devided 425 by 2, and got 213.5. Now I know I have to round to the nearest cent. And 213.5 would round to 214. Now we put the decimal back in place and add our 2.14 to our 8.50 and get $10.64

6 0

3 years ago

I need help with 6 & 8

zimovet [89]

1. We need to get rid of those pesky parentheses. We do this by distributing the 3.

2. We need to get "n" by itself, so we add 9 to both sides.

3. Add like terms.

4. Now, we need to get rid of the -9, so we divide both sides by -9. Remember that dividing by negative numbers changes the direction of the "greater than or equal to" symbol.

5. We divide, and the negatives cancel.

I wrote the answer both ways so that I could tell what the number line needed to look like.

7 0

3 years ago