Can you guide me through this question?
Which of the following has a graph that is wider than the graph of y = 3x² + 2?
y = 3x² + 3
y = 0.5x² + 1
y = –4x² – 1
y = 4x² + 1

Question

Can you guide me through this question?
Which of the following has a graph that is wider than the graph of y = 3x² + 2?  
y = 3x² + 3
y = 0.5x² + 1
y = –4x² – 1
y = 4x² + 1

cwrw238 · Answer

if you compare the graphs of ax^2 and 0.5x^2 the effect is to make the first graph wider

cwrw238 · Answer

* 0.5ax^2 I should have said

cwrw238 · Answer

study  an article about transformation of graphs
i'll try and find a site for you

anonymous · Answer

Thanks!

cwrw238 · Answer

http://www.bbc.co.uk/schools/gcsebitesize/maths/algebra/transformationhirev1.shtml

cwrw238 · Answer

yww

cwrw238 · Answer

f(x) ----> af(x)   is a stretch of factor a parallel to the y-axis so if x < 1 then this is the inverse of a stretch and the graph widens