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Maths Puzzle
Numerical Ability
The slope-intercept equation of the line through the points (7.1,-8.3) and (-2.5,6.7) is y=mx+b.
Where m= 15/-9.6 and b=?
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book Other Question
please help me with this problem .
Find (a)the directrix (b)the focus and (c)the roots of the parabola y=x^2-5x+4 (x^2 is x squared) thanks
y=1.5x2