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for part A--- how many times do the lines intersect... that is how many solutions exist

part B--- just read off the point where the lines intersect

it intersects once

^^

so that is part A done...
part B what is the point of intersection

thats where i get confused

u go to the right first

ok... so the x value is 1st followed by the y value...
what is the x value where the lines intersect

then go up

if the coordinates were (4, 6) then u would go over 4 and go up 6

I'll let others help you to avoid to many responses at once

|dw:1437509032911:dw|

maybe this can help
http://www.wikihow.com/Graph-Points-on-the-Coordinate-Plane

:)

so 4?

not quite

a coordinate has 2 #s

(3,4)?

that's right! @Austin.58

thats part b?

yes! the ordered pair is requested in part B

Thank you! Can you please help me with one more

:)

ok!

cheese*

so whats part a?

so the algebraic system is part a?

yes! please you have to keep in mind also the meaning of x and y

okay so now moving on to part b?

then I substitute into the first equation, so i can write this:
\[2x + 20 - x = 25\]

so thats part b?

solving taht equation for x, I get:
x=5

substituting x=5 into the equation for y, I get:
y=20-x=20-5=15

so the solution is:
x=5, y=15
that is the answer for part B