Graph Equations

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Pre-Calculus › Graph Equations

Questions 1 - 2
1

Given , which graph is the correct one?

Correct_graph

Grpah1

Graph2

Graph3

Explanation

First, solve for : .

Then, graph the at .

Since the slope of the line is , you can graph the point as well.

There is only one graph that fits these requirements.

Correct_graph

2

Which of the following does not lie on the line given by the equation below?

Explanation

To determine if a point lies on a line, plug in the x-value and y-value to see if the equation is satisfied. We can do this for each choice to check.

For example:

:

Since both sides are equivalent, this point does lie on the line.

We can continue to do this for each of the points until one point does not work out.

Thus, this point does not lie on the line. Thus, this must be the solution.

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