exam Maths Puzzle Numerical Ability

Determine whether the following equations have a solution or not? Justify your answer.

1. 2x2 - 10x + 25 = 0

2. 2x2 - 6x + 5 = 0

3. s2 - 4s + 4 = 0

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exam Other Question

write an equation in slope intercept form for the line that satisfies each set of conditions.

passes through (4,6) parallel to the graph of Y=2/3x+5
Please help I am not understanding:

-6(x+1)+4=16
(-6x+6)+4-4=16-4=12
x=12

??

Thank you in advance