How do you graph y=-9sqrtx by plotting points?

1 Answer
Jim G.
May 29, 2017

"see explanation"

Explanation:

"choose 3 values for x and evaluate for y"
"the values of x can only be positive"

x=0toy=0rArr(0,0)larrcolor(red)" one point"

x=1toy=-9sqrt1rArr(1,-9)larrcolor(red)" second point"

x=4toy=-9sqrt4rArr(4,-18)larrcolor(red)" third point"

"plot these points and draw a smooth curve through them"
graph{-9sqrtx [-50.63, 50.6, -25.3, 25.34]}

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