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The equation x? + y? = 9 meets x-axis at, , , , , , A (+3,0), B (+9,0), c (+1,0), , Dp (5/14, 5/14), , ZN Report a problem, , , , Solution, , 7? i y? = 9, The equation meets x-axis if the y-coordinate is 0, Sor? ++0=9, , 2? =9, z=VJ/9, = ad, , So the point is (+3, 0)
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The diameter of the circle with center (1,2) and which, passes through (-4,6) is, A arational number between 2 and 3, , B aninteger between 2 and 5, , C_ anirrational number between 5 and 7, , , , Dan irrational number between 12 and 14, , , , ZN Report a problem, , , , Solution, , Radius = \/(1+ 4)” + (2-6)? = V41, ', Diameter = 2\/41
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The cartesian equation of r = ais, , , , , , ZN Report a problem, , , , Solution, , Given thatr =a, , Put r = ,/x? + y?, we get \/a? + y2 =a, Therefore, x2? + y? = a?, , This the required cartesian equation of r = a