Unit 1, Mathematical Methods Linear and Quadratic Functions Topic Test Name: ______________________ Instructions This test will take part of 1 Period Technology and Summary notes NOT ALLOWED. Each correctly answered multiple choice question in Section A is awarded 1 mark. In all cases, circle the best option but no marks will be awarded if more than a single option is selected. Answer questions in Section B using the space provided within this question and answer booklet Formulae 𝑥1 +𝑥2 𝑦1 +𝑦2 Midpoint = ( 2 , 2 ) Distance = √(𝑥2 − 𝑥1 )2 + (𝑦2 − 𝑦1 )2 Gradient (𝑚) = 𝑦2 −𝑦1 𝑥2 −𝑥1 𝑦 − 𝑦1 = 𝑚(𝑥 − 𝑥1 ) 𝑥= Beaconhills College (Pakenham) −𝑏 ± √𝑏 2 − 4𝑎𝑐 2𝑎 Unit 1 Mathematical Methods Page 1 of 7 Unit 1, Mathematical Methods Section A: Multiple Choice (10 marks) 1 2 3 4 5 In algebraic form, 7 is four times the number that is 5 more than x can be written as A 7 = 4(x + 5) B 4x + 5 = 7 C 7 = 5(x + 4) D 4 x+5=7 E 7– 5 =x 4 For the equation 4𝑥 − 2(3 − 𝑥) = 5𝑥, x equals A 1 2 B −6 C −2 D 6 E 2 If two lines 6x – y + 5 = 0 and ax + 2y – 7 = 0 are parallel then a equals A 12 B 6 C 0.5 D 3 E 12 The length of the line segment connecting (2, 3) and (6, 6) is A 25 B 4 5 C 70 D 5 E 7 The equation 4x² + mx + 1 = 0 will have only one solution as a real number when the value(s) of m is/are A m =1 B m = 1 C m = 2 D m=3 E m=4 Beaconhills College (Pakenham) Unit 1 Mathematical Methods Page 2 of 7 Unit 1, Mathematical Methods 6 7 8 9 The expression (4x + 1)2 + 3x 2 is equal to A 4x2 + 5x 1 B 4x2 +11x 1 C 16x2 + 5x 1 D 16x2 + 5x + 1 E 16x2 + 11x 1 The solution(s) of the equation x2 5x 14 = 0 is/are A x = 7 only B x = 7, x = 2 C x = 2, x = 7 D x = 2, x = 7 E x = 2 only The solution(s) of the equation 4x2 1 = 0 is/are A x = 1 only B x = 1, x = 2 C 1 1 x= 2 ,x=2 D x = 2, x = E x = 2 only 1 2 The equation of the parabola that passes through the point (0, 11) and has its turning point at (3, 7), is 10 A y = 2(x + 3)2 + 7 B y = (x + 3)2 + 7 C y = (x + 3)2 7 D y = 2(x – 3)2 – 7 E y = 2(x – 3)2 + 7 The equation of the axis of symmetry of the graph of y = 2x2 – 12x + 17 is A x = 6 B x=6 C x = 3 D x=3 E x=0 Beaconhills College (Pakenham) Unit 1 Mathematical Methods Page 3 of 7 Unit 1, Mathematical Methods Section B: Short Answer Instructions Answer all questions in Section B in the space provided on this question paper Do not use decimal approximations unless instructed within the question Answers awarded more than one mark must show appropriate working to be achieve a maximum score Question 1 (3 marks) David is now 𝑥 years old and his big sister, Carmen is 12 years older than him. Five years ago the sum of their ages was 28. Find 𝑥. Question 2 (5 marks) Find the equation of the line that passes through the point with coordinates (–2, 6) and is: a. parallel to the line with equation y = –3x + 4 b. 2 marks parallel to the x-axis 1 mark c. perpendicular to the line with equation y = –3x + 4 Beaconhills College (Pakenham) Unit 1 Mathematical Methods 2 marks Page 4 of 7 Unit 1, Mathematical Methods Question 3 (7 marks) A line has equation 4𝑥 + 3𝑦 = 12. a. Express the line in the intercept-form 𝑦 = 𝑚𝑥 + 𝑐 for a suitable choice of the numbers 𝑚 and 𝑐. 2 marks b. i. Hence, state the: gradient of the line 1 mark ii. coordinates of the 𝑦 −axis intercept of the line 1 mark iii. coordinates of the x-intercept 1 mark c. Hence, plot the graph of 4𝑥 + 3𝑦 = 12 on the axes below, labelling the intercepts. Beaconhills College (Pakenham) Unit 1 Mathematical Methods 2 marks Page 5 of 7 Unit 1, Mathematical Methods Question 4 (4 marks) The coordinates of the endpoints of a line segment 𝐴𝐵 are (−2, 𝑎) and (𝑏, −2) respectively. a. Express the length of the line segment 𝐴𝐵 in terms of 𝑎 and 𝑏. 1 mark The point with coordinates (2,1) is the midpoint of the line segment 𝐴𝐵. b. Find the value of the numbers 𝑎 and 𝑏. c. Hence find the value of the gradient of the line segment 𝐴𝐵. 2 marks 1 mark Question 5 (5 marks) The graph with equation 𝑦 = −𝑥 2 + 6𝑥 − 5 is shown below. a. Express the equation of this graph in the factored form 𝑦 = 𝑎(𝑥 − 𝑒)(𝑥 − 𝑓) . Beaconhills College (Pakenham) Unit 1 Mathematical Methods 3 marks Page 6 of 7 Unit 1, Mathematical Methods b. Express the equation of this graph in the turning point form = 𝑎(𝑥 − ℎ)2 + 𝑘 . 2 marks Question 6 (6 marks) Consider a curve with equation 𝑦 = 2𝑥 2 − 𝑥 − 1 and a straight line of slope 𝑚, crossing the 𝑦 −axis at the point (0, −3). a. Show that the 𝑥 −coordinate of any point/s of intersection of the curve and the line must be a solution of the equation 2𝑥 2 − (𝑚 + 1)𝑥 + 2 = 0. 3 marks b. The straight line is tangential to the curve 𝑦 = 2𝑥 2 − 𝑥 − 1. Find the value(s) of 𝑚. 3 marks End of Topic Test Beaconhills College (Pakenham) Unit 1 Mathematical Methods Page 7 of 7