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Determine the equation of the line with slope −4 that passes through the point M(−2, 1).

y = −4x + 7
y = −4x − 7
y = 4x + 9
y = −4x − 9

Respuesta :

firestarangel26
y=mx+b
m=slope
b=y-intercept
y=-4x+b 
Plug in the coordinate in place of x and y (-2,1) 
1=-4(-2)+b 
1=8+b
Subtract both sides by 8 to isolate B 

b=-7

Final answer: 
y = −4x − 7
gymnastsammyjoe

y=-4x-9

I graphed it on a piece of paper.  If you put the point onto the graph and go down 4 and over one (following your slope given) until you reach the y axis, then you will find your y-intercept of your equation