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Can anyone solve x2-y-4x plus 2 equals 0 and x-2y plus 4 equals 0 using a graphing calculator?
Wiki User
∙ 13y ago
Graph both, find intersects
x**2-y-4x+2=0 --> x**2-4x+2=y
x-2y+4=0 --> (x+4)/2=y
x**2-4x+2=(x+4)/2
2x**2-8x+4=x+4
2x**2-9x+4=4
2x**2-9x=0
x(2x-9)=0
x=0, 9/2
y=(0+4)/2=2
y=(9/2+4)/2=17/4
y=2, 17/4
Intersect coordinates
(0, 2), (4.5,4.25)
Wiki User
∙ 13y ago
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