Junior Cycle · Co-ordinate Geometry of the Line
⏱ Tested in 1 exam question since 2022
Lesson 8 of 13
JCHL The Line 8: y = mx + c
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- In y = mx + c, m is the SLOPE (the number in front of x) and c is the y-INTERCEPT (the number at the end)
- To find the slope from any line equation: rearrange to get y on its own, then read off the number in front of x
- The y-intercept is the point (0, c) — on the y-axis the x-value is always 0
Formula used
y = mx + c
On page 18 of the log tables — read it off, don’t memorise.Most recent exam questions
- 2022 Q3(b)
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