Coordinate Geometry Practice Test 2024
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Questions and Answers

What is the formula to find the midpoint of a line segment between two points?

  • ((x1 - x2), (y1 - y2))
  • ((x1 + x2)/2, (y1 + y2)/2) (correct)
  • ((x1 - x2)/2, (y1 - y2)/2)
  • ((x1 + x2), (y1 + y2))

What is the formula to find the distance between two points?

  • √((x1 - x2)^2 + (y1 - y2)^2)
  • √((x2 - x1)^2 + (y2 - y1)^2) (correct)
  • √((x1 - x2)^2 - (y1 - y2)^2)
  • √((x1 + x2)^2 + (y1 + y2)^2)

What is the condition for two lines to be parallel?

  • They have different gradients but the same y-intercept
  • They have different gradients and y-intercepts
  • They have the same gradient but different y-intercepts (correct)
  • They have the same gradient and y-intercept

What is the gradient of a line that is perpendicular to a line with gradient m?

<p>-1/m (C)</p> Signup and view all the answers

What is the equation of the perpendicular bisector of a line segment?

<p>The line that passes through the midpoint of the line segment (D)</p> Signup and view all the answers

What is the common characteristic of a family of parallel lines?

<p>They have the same gradient but different y-intercepts (A)</p> Signup and view all the answers

What is the condition for a pair of equations to have no solution?

<p>The equations have the same slope and different y-intercepts (D)</p> Signup and view all the answers

If a football team scores three more goals than behinds, how can we express the number of goals in terms of the number of behinds?

<p>Number of goals = Number of behinds + 3 (A)</p> Signup and view all the answers

When solving a system of equations, what is the purpose of adding or subtracting the equations?

<p>To eliminate one of the variables (A)</p> Signup and view all the answers

What is the first step in solving the simultaneous equations and?

<p>Subtract the two equations to eliminate one variable (C)</p> Signup and view all the answers

What is the cost of a single book if the cost of 2 pens and 1 book is $15, and the cost of 3 pens and 1 book is $22?

<p>$7 (A)</p> Signup and view all the answers

What is the goal of solving a system of simultaneous equations?

<p>To find the intersection point of the two equations (A)</p> Signup and view all the answers

What is the suitable method to solve simultaneous equations if one pronumeral is the subject of one equation?

<p>Substitution (C)</p> Signup and view all the answers

Mark is 3 times as old as Julie. If the difference in their ages is 10 years, what is Mark's age?

<p>20 years (A)</p> Signup and view all the answers

In a junior football game, if the Tigers scored 2 tries and 6 goals with a total of 28 points, and the Crows scored 3 tries and 4 goals with a total of 27 points, what is the number of points awarded for each goal?

<p>4 points (C)</p> Signup and view all the answers

What is the ratio of the width to the length of a rectangle?

<p>No information provided (D)</p> Signup and view all the answers

A student purchased 10 books and 5 pens for $22.50. If the cost of one book and one pen is $3.15, what is the cost of the 10 books?

<p>$20.55 (C)</p> Signup and view all the answers

Flashcards

Midpoint Formula

The midpoint of a line segment is the point that is exactly halfway between the two endpoints.

Distance Formula

The distance formula calculates the length of a line segment between two points.

Parallel Lines

Parallel lines have the same slope but different y-intercepts. This means they will never intersect.

Perpendicular Lines

The gradient of a perpendicular line is the negative reciprocal of the original line's gradient.

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Perpendicular Bisector

The perpendicular bisector of a line segment is a line that cuts the segment in half at a right angle.

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Family of Parallel Lines

A family of parallel lines shares the same gradient, but their y-intercepts vary.

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No Solution for Equations

Two equations have no solution when their lines are parallel, meaning they never intersect. This occurs when they have the same slope but different y-intercepts.

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Goals and Behinds

The expression for the number of goals is three more than the number of behinds. This can be written as: Number of goals = Number of behinds + 3

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Solving Simultaneous Equations

Adding or subtracting equations in a system of equations aims to eliminate one variable, making it easier to solve for the remaining variable.

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Solving Simultaneous Equations - Step 1

The first step is to subtract the two equations to eliminate one variable.

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Solving Simultaneous Equations - Goal

Solving a system of simultaneous equations means finding the values of the variables that satisfy both equations.

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Substitution Method

When one variable is already isolated in one equation, the substitution method is used to solve simultaneous equations. This involves substituting the expression for the isolated variable into the other equation.

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Age Word Problem

If Mark is 3 times as old as Julie and their age difference is 10 years, we can represent their ages with equations. Let Mark's age be M and Julie's age be J. We can use the equations M = 3J and M - J = 10. Solving these equations, we find Mark's age (M) is 20 years.

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System of Equations

A system of equations is a set of two or more equations that involve the same variables.

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Ratio of Width to Length

The ratio of width to length of a rectangle is a comparison of their measurements.

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Book and Pen Word Problem

The equation allows you to solve for the cost of the 10 books. The cost of one book and one pen is $3.15. If you buy x books and y pens, the total cost is 3.15x + 3.15y. In this case, x = 10 and y = 5. The equation is 3.15 * 10 + 3.15 * 5 = 22.50. Solving for the cost of the 10 books, you find the cost to be 20.55.

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Solving Simultaneous Equations - Goal

The goal of solving a system of simultaneous equations is to find the values of the variables that satisfy both equations. This is equivalent to finding the point of intersection of the two lines represented by the equations.

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Study Notes

Coordinate Geometry Practice Test

  • The practice test consists of 30 questions covering various topics in coordinate geometry.

Midpoint of a Line Segment

  • The midpoint of a line segment between two points (x1, y1) and (x2, y2) is given by ((x1 + x2)/2, (y1 + y2)/2).

Distance between Two Points

  • The distance between two points (x1, y1) and (x2, y2) is given by √((x2 - x1)^2 + (y2 - y1)^2).

Gradient and Equations of Lines

  • The gradient of a line perpendicular to a line with equation y = mx + c is -1/m.
  • The equation of a line perpendicular to y = mx + c and passing through a point (x1, y1) is y - y1 = (-1/m)(x - x1).

Simultaneous Equations

  • Simultaneous equations can be solved using substitution or elimination methods.
  • To eliminate a variable, you can add or subtract the equations.

Applications of Coordinate Geometry

  • Coordinate geometry can be used to solve problems involving distance, midpoint, and gradient in real-world scenarios, such as football games and stationery shop costs.
  • The technique of solving simultaneous equations can be used to find unknown values in a system.

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Description

Practice your coordinate geometry skills with this 30-question test, covering topics such as midpoint of line segments, distance between points, and more. Improve your understanding of coordinate geometry concepts and prepare for your exam. This test is designed to help you assess your knowledge and identify areas for improvement.

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