SOLUTION: Find the graph of the equation by plotting points. y=-2x

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Question 179051: Find the graph of the equation by plotting points.
y=-2x
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

In order to graph this equation, we only need two points to create a straight line




--------------------------------Let's find the first point--------------------------------

y=-2x Start with the given equation




y=-2%280%29 Plug in x=0 (you can start with any number, but zero is the easiest number to work with since anything multiplied by zero is zero)




y=0 Multiply -2 and 0 to get 0



So when x=0, we have the value y=0. This means we have the first point




--------------------------------Let's find the second point--------------------------------

y=-2x Start with the given equation




y=-2%281%29 Plug in x=1




y=-2 Multiply -2 and 1 to get -2



So when x=1, we have the value y=-2. This means we have the second point




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So we have the two points: and


Now plot these two points on a coordinate system





Now draw a straight line through the two points. This line is the graph of y=-2x

Graph of y=-2x through the two points and