Year 10
Foundation

Use graphs to solve simple equations including simultaneous equations

Year 10
Foundation

Use graphs to solve simple equations including simultaneous equations

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Lesson details

Key learning points

  1. In this lesson, we will investigate how to solve a pair of simultaneous equations by ploptting them and interpreting the coordinates at the point of intersection.

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3 Questions

Q1.
Which table of values is correct for the equation x + y = 7?
An image in a quiz
A
B
Correct answer: C
Q2.
Which table of values is correct for the equation 2x + y = 7?
An image in a quiz
Correct answer: A
B
C
Q3.
Which diagram shows the correct graph for the line 3x + 2y = 15
An image in a quiz
A
Correct answer: B
C

3 Questions

Q1.
By using the graph, solve the equation 7=2x+2
An image in a quiz
x=-1
x=2
Correct answer: x=2.5
x=7
Q2.
By using the graph, solve the equation -3=5-2x
An image in a quiz
x=2.5
Correct answer: x=4
x=5
Q3.
By using the graph, solve the simultaneous equation y=5-2x and y=5x-2
An image in a quiz
x=0.4, y=-2
Correct answer: x=1, y=3
x=2.5, y=5