How do you graph y=-9sqrtxy=−9√x by plotting points?

1 Answer
Jim G.
May 29, 2017

"see explanation"see explanation

Explanation:

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

x=0toy=0rArr(0,0)larrcolor(red)" one point"x=0→y=0⇒(0,0)← one point

x=1toy=-9sqrt1rArr(1,-9)larrcolor(red)" second point"x=1→y=−9√1⇒(1,−9)← second point

x=4toy=-9sqrt4rArr(4,-18)larrcolor(red)" third point"x=4→y=−9√4⇒(4,−18)← third point

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

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