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Sedbober [7]
4 years ago
11

SOMEONE PLS HELP! IM CONFUSED (provide step by step process please)

Mathematics
1 answer:
belka [17]4 years ago
7 0

Answer:

r= 3b

Step-by-step explanation:

We can find the slope of the line by using

m= (y2-y1) /(x2-x1)

   = (12-9)/ (4-3)

   = 3/1

The slope is 3

We can use the point slope form for the equation of a line

y-y1 = m(x-x1)

y-12 = 3(x-4)

Distribute the 3

y-12 = 3x-12

Add 12 to each side

y -12+12 = 3x-12+12

y= 3x

let r =y

and x=b

r = 3b

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