The starter and exit quiz of the lesson “Finding the equation of a radius of a circle”, from the unit “Real-life graphs” (Year 11 Maths) by Oak National Academy.
Free to use. Edit it, share it and hand it out to your students.
Oak National Academy
12 questions
The radius is any __________ that joins the centre of a circle to its edge.
What is the gradient of this line?
What is the gradient of the line passing through coordinate pairs (-11,11) and (21,-53)?
What is the gradient of the line passing through coordinate pairs (-11,11) and (21,-125)?
What is the equation of the line passing through coordinate pairs (-10,-57) and (15,68)?
Which of the below equations will form a circle?
In the equation of this circle (x-a)^2+(y-b)^2=r^2 the value of r affects the __________ of the circle.
In the equation of this circle (x-a)^2+(y-b)^2=r^2 the values of a and b affect the __________ of the circle.
Match the coordinate pairs for the centre of each circle to the correct equation for that circle.
What is the gradient of the radius connecting the centre of the circle (x-8)^2+(y-2)^2=10 to the point (9,5) on the circumference?
What is the equation of the radius connecting the centre of the circle (x+5)^2+(y-3)^2=5 to the point (-4,5) on its circumference? Write your answer in the form y=mx+c
What is the equation of the radius connecting the centre of the circle (x+5)^2+(y+8)^2=20 to the point (-1,-6) on its circumference?
