SOLUTION: If (-7,1) is a point on the graph of y= f(x), which of the following must be on the graph of y= -1/2 f(x)?

Algebra ->  Graphs -> SOLUTION: If (-7,1) is a point on the graph of y= f(x), which of the following must be on the graph of y= -1/2 f(x)?      Log On


   

Question 1151374: If (-7,1) is a point on the graph of y= f(x), which of the following must be on the graph of y= -1/2 f(x)?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
If (-7,1) is a point on the graph of y=+f%28x%29, which of the following must be on the graph of y=+-%281%2F2%29+f%28x%29?
given (-7,1), means 1=+f%28-7%29
y=+-%281%2F2%29+f%28-7%29->choose x=-7, f%28-7%29=1
y=+-%281%2F2%29+1
y=+-%281%2F2%29
=>(-7,-1%2F2)


example function proof:
y=-x%2F7 If x=-7
y=-%28-7%29%2F7=1=> it is a point (-7,1)

y=-%281%2F2%29%28-x%2F7%29-> choose x=-7
y=-%281%2F2%29%28-%28-7%29%2F7%29
y=-%281%2F2%29%287%2F7%29
y=-%281%2F2%29=> it is a point (-7,-1%2F2)