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solve the system of equations by graphing, f(x)=1/2x +2 g(x)=9/2x 8
 2 years ago
 2 years ago
solve the system of equations by graphing, f(x)=1/2x +2 g(x)=9/2x 8
 2 years ago
 2 years ago

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tinaannBest ResponseYou've already chosen the best response.0
someone please help me
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
not for me i really suck at math, please help me step by step
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
is this correct f(x) = (1/2)x + 2 f(x) = (9/2)x  8
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
not sure how to make the fraction symbols for 1/8 and 9/2
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
thats ok me neither. both of these are linear of the form y = mx+b m = slope (rise/run) b = yintercept (where it crosses yaxis) Now we need to graph each one First identify yintercept for our first point 1) b = 2 2) b = 8 put these points on the graph on the yaxis
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
Next we look at slope to find second point 1) m = 1/2 This means starting at our yintercept we go down 1 and over to right 2, repeat process for additional points 2) m=9/2 This means starting at yintercept go up 9 and over to right 2 connect points to make each line point where they intersect is the solution
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
in the begining the first points b=2 b=8 is that graphed as (2,8)?
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
oh sorry i meant 1) to mean line 1 and 2) to mean line 2 they are separate points the x value is always zero for the yintercept (0,2) (0,8)
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
ok im really bad at this stuff
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
when you think yintercept, think yaxis....points will be directly on yaxis
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
ok, so back to m=1/2 and m=9/2
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
yes start with the first one go to starting point (0,2) 1 means go down 1 2 means go right 2 plot a point
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
ok so after i graphed them i came up with (2,1)?
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
correct this is the point where they cross
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
ok do u have time to help me with more
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
for a little bit, if nothing else i'll give you the steps
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
ok f(x)=1/8x3 g(x)=5/8x9
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
same thing solve by graphing
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
do the exact same steps we did before the only thing that changes is the slope and yintercept
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
for f(x) = mx + b m=1/8 b=3
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
can you graph the first point from there
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
start at 0 and go down the y to 3
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
they intercept at (2,3) is that correct?
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
careful the 8 was part of the slope for the first line
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
the other yintercept would be (0,9)
 2 years ago

tinaannBest ResponseYou've already chosen the best response.0
right , after i graphed them i got (2,3)
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
remember what the difference between m and b are another way to think of it is the slope is always the number associated with the x, yintercept is always the constant value
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
no you should get (8,4)
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
starting at (0,3) go down 1 over right 8
 2 years ago

dumbcowBest ResponseYou've already chosen the best response.0
ok good keep repeating those steps gotta go good luck
 2 years ago
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