**Example 1** - mental math

It can be read from the equation as C/B.

**Example 2** - mental math

The slope can be determined from the graph as rise/run. Match this with -A/B in each answer choice and eliminate the answer choices where the slope does not match.

The slope can be determined from the graph as rise/run. Match this with -A/B in each answer choice and eliminate the answer choices where the slope does not match.

Tip: matching -A/B to given slope is straightforward. Make use of the negative/positive values of A and B. Negative A and B = positive slope. Positive A and B = positive slope. Negative A and positive B or positive A and negative B = negative slope.

The y-intercept can be read from the graph. Match it with C/B in the remaining answer choices.