Book Maths Puzzle Co-ordinate geometry

How do I write an equation for a parabola that crosses the x axis at (1.5, 0) and (4.5,0)?

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Book Other Question

What is the inverse function of:

Y= (x+3)/(x-5) How would I go about solving the system of equations using all three methods, graphing, substitution, addition for:

y=-x+7
y= 1/2x -5

I have worked on this for two days, and