Lesson B4
B4 Simultaneous equations: linear and quadratic Quiz: AQA Maths, Unit 2
20 questions
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Lesson B4, Simultaneous equations: linear and quadratic: 20 multiple choice questions for the AQA Maths (7357), Unit 2: Algebra and functions, written with Revision Ninja.
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The 20 questions
-
Solve x + y = 5 and x - y = 1 simultaneously.
- x = 3, y = -2
- x = 2, y = 3
- x = 3, y = 2
- x = 4, y = 1
-
Solve y = x + 1 and y = x^2 - 1 simultaneously.
- (2, 3) and (-1, 0)
- (2, 3) and (1, 2)
- (-2, -1) and (1, 2)
- (2, 3) only
-
Given x + y = 4 and xy = 3, find x^2 + y^2.
- 16
- 4
- 7
- 10
-
Which method eliminates one variable by adding or subtracting the equations?
- Completing the square
- Substitution
- Elimination
- Factorisation
-
How many real intersection points can a line and a parabola have?
- Zero, one or two
- Infinitely many
- Exactly two
- Exactly four
-
Find where the line y = x + 1 meets the circle x^2 + y^2 = 25.
- (-3, -4) and (4, 3)
- (3, 4) and (4, 3)
- (3, 4) only
- (3, 4) and (-4, -3)
-
How many solutions do 2x + 3y = 6 and 4x + 6y = 10 have?
- None, since the lines are parallel
- Infinitely many
- Exactly two
- Exactly one
-
How many solutions do 2x + 3y = 6 and 4x + 6y = 12 have?
- Infinitely many
- Exactly one
- Exactly two
- None
-
Solve 2x - y = 1 and x^2 + y = 4 exactly.
- x = -1 + sqrt(6), y = -3 + 2 sqrt(6); and x = -1 - sqrt(6), y = -3 - 2 sqrt(6)
- x = -1 + sqrt(5), y = -3 + 2 sqrt(5); and x = -1 - sqrt(5), y = -3 - 2 sqrt(5)
- x = 1 + sqrt(6), y = 1 + 2 sqrt(6); and x = 1 - sqrt(6), y = 1 - 2 sqrt(6)
- x = 2 and y = 3 only
-
For the line y = mx + 2 and the curve y = x^2 + 1, which statement is correct?
- They never meet for any real m
- They touch for exactly one value of m
- They meet only when m = 2
- They meet at two distinct points for every real m
-
Solve x + 2y = 8 and 3x - y = 3.
- x = 3, y = 2
- x = 2, y = -3
- x = -2, y = 3
- x = 2, y = 3
-
Which graphical fact is the basis for solving simultaneous equations?
- The solutions are the coordinates of the points where the two graphs intersect
- The solutions are the gradients of both graphs
- The solutions are the turning points of both graphs
- The solutions are the points where either graph crosses the y-axis
-
Solve y = 3x and x^2 + y^2 = 40.
- (2, 6) and (6, 2)
- (4, 12) only
- (3, 9) and (-3, -9)
- (2, 6) and (-2, -6)
-
Find where y = x - 2 meets y = x^2 - 4x + 2.
- (1, -1) and (4, 2)
- (0, -2) and (3, 1)
- (2, 0) and (3, 1)
- (1, -1) only
-
Given x - y = 2 and x^2 - y^2 = 8, find x + y.
- 2
- 4
- 16
- 8
-
Solve x^2 + y^2 = 13 and x + y = 5. Which pair of solutions is correct?
- (1, 4) and (4, 1)
- (2, 3) only
- (2, 3) and (3, 2)
- (-2, 7) and (7, -2)
-
Which pair of equations has a unique solution?
- x + y = 2 and 2x + 2y = 5
- x + y = 2 and x - y = 0
- x + y = 2 and 2x + 2y = 4
- x = 1 and x = 2
-
A line through (0, 1) with gradient 2 meets the line 3x + y = 11. Where do they meet?
- (1, 3)
- (3, 2)
- (2, 3)
- (2, 5)
-
Solve x - 2y = 0 and xy = 8.
- (2, 4) and (-2, -4)
- (4, 2) and (-4, -2)
- (4, -2) and (-4, 2)
- (8, 1) only
-
When the substitution of a line into a quadratic curve gives a quadratic with discriminant 0, what does this mean?
- The system has infinitely many solutions
- The line is a tangent, meeting the curve at exactly one point
- The line and the curve meet at two distinct points
- The line and the curve never meet
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