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Artemon [7]
3 years ago
9

How do you write the equation for intercept (4,-3), m=-1

Mathematics
1 answer:
nata0808 [166]3 years ago
6 0

Answer:

y=-1x+-3

Step-by-step explanation:

y=mx+b

y=-1x+-3

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Monday 10 and Saturday 5!!!
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A company is testing and comparing two lightbulb designs. The box plots show the number of hours that each lightbulb design last
Marrrta [24]

Answer:

Design B bulbs will likely last longer than design A bulbs

Step-by-step explanation:

The B box  part spans higher numbers than the A box  and  the median of B bulbs is higher than median of the A bulbs.

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Using the keys above, enter an expression equivalent to (-7x^2+4x-3)+(6x-15) using the fewest possible terms.
navik [9.2K]

Answer:

Final answer in simplified form is -7x^2+10x-18

Step-by-step explanation:

Given expression is (-7x^2+4x-3)+(6x-15)

Now we need to find an equivalent expression for (-7x^2+4x-3)+(6x-15)

First we can distribute the positive sign and remove the parenthesis the combine like terms

(-7x^2+4x-3)+(6x-15)

=-7x^2+4x-3+6x-15

=-7x^2+4x+6x-3-15

=-7x^2+10x-18

Hence final answer in simplified form is -7x^2+10x-18

7 0
3 years ago
Need 2 more. 50 points!<br><br> Please show work, Thanks! :)
rjkz [21]

Answer:

1) C

2) C

Step-by-step explanation:

Question 1)

We want a parabola that has the vertex (-8, -7) and also passes through the point (-7, -4).

So, we can use the vertex form. Remember that the vertex form is:

y=a(x-h)^2+k

Where a is our leading co-efficient and (h, k) is our vertex.

We know that our vertex is (-8, -7). So, substitute this into the equation:

y=a(x-(-8))^2+(-7)

Simplify:

y=a(x+8)^2-7

Now, we need to determine the value of our a. To do so, we can use the point the problem had given us. We know that the graph passes through (-7, -4).

So, when x is -7, y is -4. Substitute -7 for x and -4 for y:

(-4)=a((-7)+8)^2-7

Solve for a. Add within the parentheses:

-4=a(1)^2-7

Square:

-4=a-7

Add 7 to both sides. Therefore, the value of a is:

a=3

So, our entire equation in vertex form is:

y=3(x+8)^2-7

Our answer is C.

Question 2)

We are given a graph and are asked to find the equation of the graph.

Again, let's use the vertex form. From the graph, we can see that the vertex is at (-2, 2). Let's substitute this into our vertex equation:

y=a(x-(-2))^2+2

Simplify:

y=a(x+2)^2+2

Again, we need to find the value of a.

Notice that the graph crosses the point (-1, 5).

So, let's substitute -1 for x and 5 for y. This yields:

5=a((-1)+2)^2+2

Solve for a. Add within the parentheses.

5=a(1)^2+2

Square:

5=a+2

Subtract 2 from both sides. So, the value of a is:

a=3

Therefore, our entire equation is:

y=3(x+2)^2-2

Our answer is C.

And we're done!

3 0
3 years ago
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Juli2301 [7.4K]

Answer:

Here is the domain and range

Step-by-step explanation:

(0,0), (-6,6) , (3,1), (3,2), (3,-2), (8,9), (0,1), (1,0)

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