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Gradient =
This means the gradient is 4x.
The y intercept is where the line crosses the y axis. We can see this is at -3.
<h2>Rule: <u>y = 4x -3</u></h2>Substitute your values to check if it's right.
y = 4x -3
5 = 4(2) - 3
5 = 8 - 3
5 = 5
1 = 4(1) - 3
1 = 4 - 3
1 = 1