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Angelina_Jolie [31]
2 years ago
13

HELP ME PLEASE!! Which equation describes this line!!

Mathematics
1 answer:
Kobotan [32]2 years ago
7 0

Answer:

Option A: y-9=2(x-1)

Step-by-step explanation:

Notice that the answer choices are in point-slope form which is y-y1=m(x-x1)

The slope, m, is (9-3)/(1-(-2))=6/(1+2)=6/3=2, but that's given anyway.

Option A would be right because y1=9 and x1=1 which is where the line crosses through (1,9)

B is not right because that would suggest the line crosses (2,3) as y1=3 and x1=2, but it actually crosses (-2,3) so it should've been y-3=2(x+2)

C and D are wrong because the points aren't crossed through

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Extra Notes:

y=mx + b is the slope intercept equation.
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B is the y intercept
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To find slope, you can always use y2-y1/x2-x1 or even determine the slope on the graph by using rise over run and simplifying when possible. 

(Please check my method to see if the answers are correct)
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