(a) On the grid, draw the graph of \(x^2 + y^2 = 169\)(2)
(b) Use your graph to find estimates for the solutions of the simultaneous equations\[\begin{gathered} x^2 + y^2 = 169 \\ 2y = 3x \end{gathered}\] (3)
Mark scheme (a)
Answer
Mark
Mark scheme
Circle drawn
B2
for drawing a circle centre \((0,0)\) and radius 13
(B1
for drawing a circle centre \((0,0)\) with radius \(\neq 13\) or a circle of radius 13 with a centre not \((0,0)\) or an incomplete correct circle drawn)
Additional guidance
Circle could be drawn freehand as long as it closely approximates to a circle
