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Question

Graph the function y=-3x


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Solution

Step 1: Finding value of input and output (coordinates) or x and y.

Input (x)

Output (y=-3x)

Ordered pair

-1

y=-3(-1)=3

(-1,3)

0

y=-3(0)=0

(0,0)

1

y=-3(1)=-3

(1,-3)

2

y=-3(2)=-6

(2,-6)

Step 2: Plotting the graph of function y=-3x

Mark all the ordered pairs on the graph to get the points.

And then draw a straight line passing through those points,

Hence, the graph of the function y=-3x is shown above.


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