HELP!!!!!!!!!!! Solve the following system of equations graphically. Click on the graph until the correct solution of the system appears. y = -3 x - y = 8
can u graph this: y = -3
huh?
can you graph y=-3, do you know how to graph this?
no not really. graphs are my week point
ok ^_^
weak**
I think its the first one
so here is our coordinate system: |dw:1387394103077:dw|
when y=-3, we will draw a horizontal line that goes the the point -3 on the y axis. so we first locate -3 on the y axis
|dw:1387394161439:dw|
once located, we draw a horizontal line through it.|dw:1387394186255:dw|
this is the graph of, y=-3
make sense so far?
@miamilove14
yea ^.^
@DemolisionWolf
good ^_^
so next we have to graph: x - y = 8
thank you ^.^
the easiest way to graph this is (oh, we arnt' done yet ^_^)
the easiest way to graph this, x - y = 8, is to get two points. first, let x=0, then solve for y then let y=0 and solve for x, can you do this step for me?
ummmmm......
i'll do the first one: "let x=0 and solve for y" so... x - y = 8 0 - y = 8 there is only 1 number that y can be, 0-(-8) = 8 so y=-8 then we have the ordered pair (or the point) (0, -8) make sense? u try the next step let y=0 and solve for x
So would x be 8?
x - y = 8 x - 0 = 8 8 - 0 = 8 yep ^_^ good work, so we now have the second ordered pair (or point) to graph so, lets plot (0, -8) and (8, 0) on to our graph
|dw:1387394929609:dw|
|dw:1387394974070:dw|
|dw:1387395008240:dw| make sense so far?
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