Higher

Solving Quadratic Equations Graphically

Higher

Solving Quadratic Equations Graphically

Lesson details

Key learning points

  1. In this lesson, we will interpret graphs of quadratic equations in order to find their solutions. We will investigate the key features of quadratic graphs that help us identify their solutions.

Licence

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4 Questions

Q1.
True or False, here is the graph of 2x²+ 1?
Correct answer: False
True
Q2.
Here are four quadratic graphs. The red curve shows y = x². Which equation is the yellow curve labelled i?
A
B
Correct answer: C
D
Q3.
Here is a table of values for y = 3x²– 1 Which number is missing?
A
B
Correct answer: C
D
Q4.
Which option is true for f(x)= 0.5x² - 1 ?
Correct answer: A
B
C
D

4 Questions

Q1.
A
B
Correct answer: C
D
Q2.
A
B
C
Correct answer: D
Q3.
(-0.5, 0)
Correct answer: (-0.5, 0) and (3.5, 0)
(0.5, 0) and (3.5, 0)
(0.5, 3.5)
Q4.
A
B
C
Correct answer: D

Lesson appears in

UnitMaths / Quadratic Graphs 1 (a=1)

UnitMaths / Revise - Linear and Quadratic Graphs