Solve 3x-y=-12 x+y=18
2 answers:
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F(x) = -2x +1 ( slope = -2 y intecept is 1)
replace x with 0 and solve for y =-2(0)+1 = 1 ( 0,1)
replace x with 2 and solve for y: -2(2) +1 = -4+1 = -3 (2,-3)
plot those 2 coordinates and draw a line
this is the red line on the attached graph
do the same for the g(x) formula
blue curve on graph.
replace x with 0 and solve for y =-2(0)+1 = 1 ( 0,1)
replace x with 2 and solve for y: -2(2) +1 = -4+1 = -3 (2,-3)
plot those 2 coordinates and draw a line
this is the red line on the attached graph
do the same for the g(x) formula
blue curve on graph.
