Mathematics 4024 · O Level · Sketching curves

Sketching curves — practice question

(a)[1]

Fill in the table for $y = \dfrac{x^2}{2} - 3x + 2$.

(b)[3]

Sketch the graph of $y = \dfrac{x^2}{2} - 3x + 2$ for $-1 \le x \le 7$.

(c)[2]

By drawing a tangent, estimate the gradient of the curve when $x = 1.5$.

(d)[2]

Complete these inequalities to show the set of $x$-values for which $y \ge 0$.

(e(i))[2]

Draw the line $4y + 3x = 12$ on the same grid.

(e(ii))[2]

The $x$-coordinates of the intersection points of this line and the curve are the solutions of the equation $2x^2 + Ax + B = 0$. Find the value of $A$ and the value of $B$.

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