We just started doing inequalities in class and I get the basics, but this is what gets me. M = 7, point (0,-5) How would I write this in Y = mx + b format?
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First, we know m: Next, we know x and y: Solve for b: Notice, if , and is on the line, . So, now, write your equation down: Or:
Originally Posted by largebabies We just started doing inequalities in class and I get the basics, but this is what gets me. M = 7, point (0,-5) How would I write this in Y = mx + b format? The y intercept = -5, therefore y=7x-5
m=7, (0,-5) y- (-5) _______ = 7 : then cross multiply x-0 y+5= 7x: move five to the other side by subtracting it so then you get y=7x -5
Thank you all, it's help alot Although, I need help on another equation, what if there is two points? example: M = 3/2, point (5,-6)?
First, we know m: Next, we know x and y: Solve for b: So, now, write your equation down:
Thank you once again, although it's supposed to be 27/2 not -27/2
Alright, how about this? "passes through (4,2) and (0,8)"
Originally Posted by largebabies Alright, how about this? "passes through (4,2) and (0,8)" Find the slope: From (0, 8) we know the y-intersept = 8. Use the slope-intercept form of the general equation: , where m is the slope, and b is the y-intercept.
that helped alot! although i'm now stuck on another equation , I did the same thing with this and got y= -10/-2 when I needed -5/4. The equation goes like this. “passes through (-5,10) and (3,0)” help?
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