y = mx + c
SLOPE · INTERCEPT · LIVE LINE
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Straight Line Graph
-7
-6
-5
-4
-3
-2
-1
1
2
3
4
5
6
7
-4
-3
-2
-1
1
2
3
4
x
y
run = 1
m
=
slope (gradient)
c
=
y-intercept
direction
1. Slope Formula
m = (y₂ − y₁) / (x₂ − x₁)
points (1,
) and (2,
) → m =
2. Sign of Slope
m > 0
line goes up ↗
m = 0
horizontal line →
m < 0
line goes down ↘
3. Remember
c = where the line cuts the y-axis
Parallel lines have the same slope
MATRIC MATHS · LINEAR GRAPHS · PUNJAB BOARDS
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