Please help me with graphing these quadratics if you can.

Please show and explain all steps so I can add them to my notes and understand them better, thank you for your help. Identify the vertex, axis of symmetry, domain, range, and x- and y-intercepts for the following quadratic functions. Then graph each function:

f(x) = -2(x+1)^2 + 8

f(x) = 2x + 4x - 5

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MasterofNone · 26-30, M

I will but you have to fix the second question.

MightyLion · 18-21, M

What do I have to fix about the second question? @MasterofNone

MasterofNone · 26-30, M

@MightyLion If it is 2x + 4x then why not simply write 6x? I bet it's something else.

MightyLion · 18-21, M

What you are saying makes sense and I am not sure why my school made the guided notes with it like that but that is how it is on there. @MasterofNone

MasterofNone · 26-30, M

@MightyLion Cool so that means that the second question is wrong. You have to ask your school about that. Because the second question in its current state is not even quadratic.

What part do you need help with?

I can give some hints. Quadratic equation form parabola. If x has negative coefficient it will be downward and if x has positive coefficient it will be upward parabola.

In the first question it is downward. Vertex is when after you make the equation in the form y - b = k(x - a)^2 whatever is (a,b) is the vertex. So in first question if you put x = -1 and f(x) = 8 that's what'll happen hence (-1,8) is the vertex where y = f(x). Can you go further yourself?

akindheart · 61-69, F

@MasterofNone ok i am real impressed by you!!

MasterofNone · 26-30, M

@akindheart Thanks!