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Sagot :
the expression is,
y = -2x + 1
a)
the point is (-4,9)
put x = -4 and y = 9
9 = -2(-4) + 1
9 = 8 + 1
9 = 9
both values are same
so this pair is satisfying the equation.
b) the point is (0.5,0)
put x = 0.5 and y = 0
0 = -2(0.5) + 1
0 = -1 + 1
0 = 0
so this pair is satisfying the equation.
c)
the point (1,3)
put x = 1 and y = 3
3 = -2(1) + 1
3 = -2 + 1
3 = -1
so this pair is not satisfying the equation.
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