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julia-pushkina [17]
2 years ago
6

Please help me ASAP I will give brainliest

Mathematics
2 answers:
stellarik [79]2 years ago
3 0

Answer:

-23

Step-by-step explanation:

rearrange to point slope form first

slope can be fine by y2-y1/x2-x1 (im using the first 2 points)

so 13-25 = -12 and -54-(-72) = 18, and the slope is -12/18 which is -2/3

then you can use any point (i used the first point) to create the point slope form which is y-ypoint=slope(x-xpoint) and equation would be y-25=-2/3(x+72)

turn it into slope intercept form by multiplying -2/3 within the equation and adding -25 on both sides

you will get y= -2/3x-23

and the y intercept will be (0, -23)

Travka [436]2 years ago
3 0
(o,-23)
This is because the slope is -2/3 and if you graph this it’ll show that the line crosses the y intercept at -23
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Graph the equation y=x²-8x+7 on the accompanying set of axes. You must plot 5 points including the roots and the vertex.
notka56 [123]

Answer:

vertex is: (4,-9)

y intercept= (0,7)

roots= (1,0) and (7,0)

Step-by-step explanation:

so we can use factoring to solve this quadratic equation real quick:

x^2-7x-1x+7

x(x-7)

-1(x-7)

(x-1)(x-7)=0

x-1=0

x=1

x-7=0

x=7

(1,0) and (7,0) are the roots

axis of symmetry: 8/2=4

substitute axsis of symmetry in equation to get vertex:

4^2-8(4)+7

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vertex is: (4,-9)

y intercept= (0,7)

roots= (1,0) and (7,0)

Hope this helps

3 0
3 years ago
Kelsie sold digital cameras on her website. She bought the cameras for $65 each and included a 60% markup to get the selling pri
GarryVolchara [31]
Bought :    $65

60% Mark up.

60% of 65

(60/100) * 65

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39.

Since this is a markup, the selling price =  65 + 39 = 104

Hence Selling Price = $104
4 0
3 years ago
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Lostsunrise [7]

Answer:

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Step-by-step explanation:

-11 -14 are same sign is equal to plus ,,so that is answer -52 ...

5 0
2 years ago
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Write the equation of a line using the following information: m = -4, b = 3
german

Answer:

sorry

Step-by-step explanation:

?

8 0
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Please please please please please help me <br> i will give brainliest
alukav5142 [94]
2x^2 - 4 = 68
add 4 to both sides
2x^2 = 72
divide both sides by 2
x^2 = 36
find the square root of each sides
x = 6, -6

ANSWER: the positive value of x is 6
7 0
3 years ago
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