WILL FAN AND MEDAL!
MULTIPLE CHOICE

Question

WILL FAN AND MEDAL!
MULTIPLE CHOICE

anonymous · Answer

attachment

anonymous · Answer

Sure?

anonymous · Answer

attachment

anonymous · Answer

Sorry, this is like the one thing in math I'm not so great at.

anonymous · Answer

Lol it doesnt let me upload the pictures right away its weird;-p @MathleticMagician

anonymous · Answer

oh its all good:)

anonymous · Answer

@aida1997jallad could you maybe help? ill medal:)

anonymous · Answer

@texaschic101 maybe you can help?:)

anonymous · Answer

@valleygirl hi could you help? ill fan and medal if its right:)

anonymous · Answer

sure what do you need help on?

anonymous · Answer

@valleygirl i dont know the answer:(

anonymous · Answer

what are the question to the answers?

anonymous · Answer

@valleygirl which of these rules is represented by the graph, its in the first pic;)

danjs · Answer

Since the graph is discontinuous with that jump in it, you need a piecewise defined function to include everything

danjs · Answer

recall an open circle at the end means that value is not included,  a closed dot means that value is included
at x=1, the value is y=2

danjs · Answer

i think you usually list the pieces by increasing x values,   start on the left side and list the equations for those lines

anonymous · Answer

oh I see I know the answer to your problem. But we need to solve it

danjs · Answer

solve what?, all i see is they want you to write the function down

anonymous · Answer

so its the fourth one right

anonymous · Answer

no that's not what I mean I mean that you have to figure out which ways on how its going on the graph

danjs · Answer

the first is easy,   horizontal line constant y value,   y = -3 
that part of the graph is for all values Less Than 1,  (open circle)

danjs · Answer

y=-3  if  x<1

danjs · Answer

the second part , you have to figure the equation for that slanted line

anonymous · Answer

ohhhh its the second option then right!!!

danjs · Answer

not quite, notice the slope there is positive,   the line has a negative slope

anonymous · Answer

that would leave the first one?

danjs · Answer

The slope of the slant is   m = -1
Use any point on the slant (x1 , y1) = (3,0)

put the line together, 

y - y1 = m*(x - x1)
y - 0   =  -1*(x-3)

danjs · Answer

y = -x + 3   for x is greater or equal to 1

anonymous · Answer

ok thanks so much:)

danjs · Answer

welcome