exam Maths Puzzle Numerical Ability

find the slope and y-intercept of the graph of each equation.

1. x = 2y - 7

2. y = 1/4x + 3

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exam Other Question

Please, how do i solve with the quadratic formula:

6x^2=x + 2

Thank you.
Maximize z= 14x+22y subject to:
2x+2y> or equal to 20
8x+5y< or equal to 40
x> or equal to 0, y> or equal to 0
The linear programming has a what type of solution?