exam Maths Puzzle Numerical Ability

im looking for the slope in percent of PH BUFFER SOLUTIONS. The readings are 4.00, 7.02, and 10.07. my question is what is the slope percent? Can you help me?

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exam Other Question

Please help. I need step by step information please.

Solve the following systems of linear inequalities graphically.

3x - y ≤ 6
x ≥ 1
y ≤ 3

T
graph y=-2
3x-y=-1