Write an equation for a line parallel to 2y = 4x - 10
Divide the equation by two to get y = 2x - 5This shows that the gradient of the line is 2. Any other equation with the gradient equal to 2 (the x coefficient) when the y coefficient is 1.e.g. y = 2x +12 or y = 2x - 3 or y = 2x +4
AS
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Find the gradient of the line on which the points (1,3) and (3,4) lie and find the y-coordinate of the line at x = 7.
Anna has 6 bananas. Ben has 2.5 times more bananas than Anna. Callum has a third as many bananas as Anna and Ben have together. How many bananas do Anna, Ben and Callum have together?
Solve the simultaneous equations: 1) 4x - 2y = 28, 2) 4y - 3x = -36.