Year 11
Higher
Year 11
Higher
Find the equation of a straight line using y=mx+c
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Lesson details
Key learning points
- In this lesson, we will find the equation of a straight line using y=mx+c. We will use coordinates taken from a plotted straight line to help us calculate the gradient, then use a method of substitution to find the equation of the line.
Licence
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3 Questions
Q1.
Work out the gradient of the line.
0.5
4
8
Q2.
Work out the gradient of the line.
-0.5
2
4
Q3.
Work out the gradient of the line passing through the points (-5, -9) and (1, 3).
-0.5
-2
4
3 Questions
Q1.
Work out the equation of the line.
y=0.5x+4
y=3x-1.5
y=x+4
Q2.
Work out the equation of the line.
y=-1/3x+2
y=-2x+2
y=3x+2
Q3.
Find the equation of the straight line that has a gradient of 4 and passes through the point (1, 10)
y=4x
y=4x+1
y=4x+10