Semester Exam Review

A half circle equals 180 degrees.

So, 103.5 + A = 180.

To solve for $$\angle A$$ we must subtract 180 - 103.5 and that will give you $$\angle A$$ =76.5.

24 ounce of ink is y and 18 minutes is x. Divide y by x.

$$\frac{y}{x}=\frac{24\ oz}{18\ \min}=\frac{4}{3}ounces\ per\ \min$$

This is the slope. Now find the slope of each line and find the one that matches it.

You can use $$\frac{rise}{run\ }$$ or the slope formula $$\frac{y_2-y_1}{x_2-x_1}$$

6 miles is y and 48 minutes is x. Divide y by x.

$$\frac{y}{x}=\frac{6\ miles}{48\ \min}=\frac{1}{8}miles\ per\ \min$$

This is the slope. Now find the slope of each line and find the one that matches it.

You can use $$\frac{rise}{run\ }$$ or the slope formula $$\frac{y_2-y_1}{x_2-x_1}$$

Use the Pythagorean Theorem, $$a^2+b^2=c^2$$ The width is 16 or a and the diagonal is the hypotenuse which is 65 or c, so find b.

Look at the diagrams and what do you notice? Then compare it to the diagram. Notice that the angles are congruent (equal).

Connect the two points forming a RIGHT TRIANGLE.

Count the measure of each leg (a and b) and then use the Pythagorean Theorem to find the hypotenuse (c).

$$a^2+b^2=c^2$$

Create a table. Then look at the x values.

For the Mapping to be a FUNCTION, X can NOT repeat.