Question

Select the points that lie on the function h(x) = 3x 2.

(1, 3)
(1, 9)
(-1, -3)
(-1, 3)

Answer 1

\[ \large h(x)=3x^2 \]
right??

Answer 2

Yes

Answer 3

the first one for instance (1,3) u got x=1 and y=3 so
\[ \large y=h(1)=3\cdot1^2=3 \]
so this point DOES lie on the function h

Answer 4

Oh ok..so it's the first one then?

Answer 5

check the others in this way

Answer 6

ok i will

Answer 7

what i did proves the 2nd is not.
the square cancels signs, so this rules out the 3rd.
what about the 4th???

Answer 8

the forth is one, it's just neg.

Answer 9

\[ \large y=h(-1)=3\cdot(-1)^2= \]