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Question 129743: how do you graph this equation
y=-3x+4
Answer by torielisa17(4)   (Show Source):
You can put this solution on YOUR website! how do you graph this equation
y=-3x+4
FIRST REMBEMBER Y = MX + B
M IS SLOPE ( HOW MUCH YOU GO UP OR DOWN AND LEFT OR RIGHT)
B IS STARTING POINT OF THE Y AXIST ( VERTICAL AXIS )
YOUR EQUATION
FRIST STEP FIND YOUR STARTING POINT WHICH IS 4 (B)
THAT 4 MEANS START AT (0,4)
STEP 2
NEXT IS SLOPE
YOUR SLOPE IS -3 OVER 1 OR - 3/1 ( m) *NEGATIVE SIGN IS ONE THE TOP
THAT MEAN IS YOU WILL GO DOWN (BECAUSE IT IS A NEGATIVE NUMBER) 3 FROM YOU START POINT (0,4) AND OVER 1 ( IT IS A POSTIVE NUMBER) TO RIGHT
YOU WILL CONTINUE TO DO 2 UNTIL YOU REACH END OF YOU PLOT
STEP 3
SLOPE AGAIN
SWITCH THE POSTION OF NEGATIVE SIGN ( 3/-1) NEGATIVE IS ON BOTTOM PART
YOU WELL HAVE TO FINSH YOU LINE
BY GOING UP ( IT POSTIVE NUMBER NOW) 3 FROM STARTING POINT ( 0, 4) THEN LEFT ( BECAUSE IT NEGAITIVE NUMBER NOW) ONE
*KEY NOTES
SLOPE IS RISE OVER RUN
3 TOP PART IS HOW MUCH YOU GO UP IS WHEN IT IS POSTIVE OR DOWN- IS WHEN IT IS NEGATIVE ( MUST DO BOTH)
OVER
1 IS HOW MUCH YOU GO LEFT IS (NEGAITVE NUMBER) OR RIGHT (IS POSTIVE NUMBER)
* YOU HAVE A NEGATIVE SLOPE BECAUSE M IS NEGATIVE
SO GRAPH GOES (LEFT TO RIGHT) RISING FROM LEFT BOTTOM TO RIGH TOP)
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