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3 years ago

Help me with question 15 plz?

Mathematics

2 answers:

kirza4 [7]3 years ago

8 0

Answer:

B y=2x+3

Step-by-step explanation:

We need to find the slope of the relationship in the table

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

= (13-7)/(5-2)

= 6/3

The slope is 2

We can use point slope form to make an equation

y-y1=m(x-x1)

y-7 = 2(x-2)

Distribute the 2

y-7 =2x-4

Add 7 to each side

y-7+7 =2x-4+7

y = 2x+3

yawa3891 [41]3 years ago

6 0

Answer:

Step-by-step explanation:

well plug in x and y

so if it says y=2x-3 put it as 7=(2x2)-3 and see if it gives u 7 and if it does di the next set of x and y numbers

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9m + 9

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3 years ago

three friends are in the same algebra class. Their scores on a recent test are three consecutive odd intergers whose sum is 279.

jasenka [17]

X= 1st integer
x+2= 2nd integer
x+4= 3rd integer

Add the integers together

x + (x + 2) + (x + 4)= 279
combine like terms
3x + 6= 279
subtract 6 from both sides
3x= 273
divide both sides by 3
x= 91 first integer

Substitute x=91 to find 2nd & 3rd integers

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=x+2
=91+2
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3rd Integer
=x+4
=91+4
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ANSWER: The three test scores are 91, 93 and 95.

Hope this helps! :)

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