Answer:
Explanation:
y = mx + b
The slope (m) is negative since the line is pointing downwards.
The slope is equal to rise over run. The points go down 2 over 1, which is 2/1 or 2.
B, aka the y-intercept, is equal to 9
y = -2x + 9
some dotted lines coordinates : ( 0 , 9 ) , ( 2 , 5 )
find gradient : 5 - 9 / 2- 0
m : -2
use equation:
y - y1 = m ( x - x1 )
y - 9 = -2 ( x - 0 )
y - 9 = -2x
proved in the image below. confirmed.
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