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Simple Algebra: Determining Line Equations

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1. The equation of the line L is parallel to y=5x. What is the equation for line L?

2. If (a,-2) is a point on the graph of y=x^2+3x, what is a?

3. Find the equation for the line with the given properties. Express the equation in slope intercept form. The points are P=(-1,-3) and Q=(1,-2). What is the equation of the line?

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Solution Summary

We solve problems pertaining to lines passing through given points as well the slope and y-intercept.

Solution Preview

1. L has the equation y = 5x + b, where b is an arbitrary nonzero constant.

2. We have

-2 = a^2 + ...

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