If the grap
Given: Quadratic polynomial ax2 + bx + x cuts the positive direction of y–axis.
To Find: Sign of c
If quadratic polynomial ax2 + bx + c cuts positive direction of y–axis, then it means that the value of y is positive when x = 0 [∵ at y–axis, x = 0]
y = c at x = 0 and y is positive.
So, c is positive.
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