Question

i have one last question taking me forever to complete can i get help? i have class soon and i need to do this before then

Answer 1

to graph a line,
we just need to somehow find to points that lie on the line,
the graph is the line that connects the two points

Answer 2

lets first do
a= 1/2 b + 5

Answer 3

set a=0
and solve for b

what do you get?

Answer 4

i dont know

Answer 5

oh wait you get b=-10 @baru

Answer 6

yes
so when a=0 we get b=-10
so (a,b) = (0, -10) is a point on the line

now do b=0 and find another point on the line

Answer 7

you get a=5

Answer 8

@baru

Answer 9

yes,
so that means when b=0 we get a=5
so (a,b)=(5,0)
is a point on the line

so plot the points (0,-10) and (5,0)
connect them with a straight line.
that is the graph of the first line.

Answer 10

follow the exact same procedure with the equation of the second line.

Answer 11

but how would i do a-2b=2
isnt it 0-2b=2? thats odd

Answer 12

0-2b=2

-2b=2

b=-1

do understands the steps i carried out?

Answer 13

yes so it would be (0-1)?

Answer 14

correct! :)

so now try finding the other point

Answer 15

isnt it a-2(0)=2
i dont know how i think its still 2 or (0,2)??

Answer 16

yes,
a=2

so the point is (2,0)
not (0,2)

it has to be in the order (a,b)
when b=0 we get a=2
so (2,0)

Answer 17

what would be the other point??

Answer 18

you just found
(0,-1)

now we have (2,0)

plot them and connect them

Answer 19

how do i find the solution?

Answer 20

the two lines you plotted will meet at one point.
the co-ordinates for that point is the solution.

for example, if they intersect at (8,9) then a=8 and b=9 is the solution.

Answer 21

i dont know where the intersect i think its (6,2)

Answer 22

that is correct :)
so the solution is a=6 and b=2

Answer 23

thank you and i have given you a medal for getting me through this u have no idea how important this class is for me

Answer 24

your welcome :D