Find the slope (if defined) of the line that passes through the given points.

$\left(\frac{2}{3}, 9\right)$ and $\left(\frac{1}{2}, 9\right)$

On a particular day, the linear function defined by

$$f(x)=-3.52 x+58.6$$

approximates the temperature in degrees Fahrenheit above the surface of Earth, where x is in thousands of feet and y is the temperature. (Source: Schwartz, Richard H., Mathematics and Global Survival, Ginn Press.)

(a) When the height is 5000 feet, what is the temperature? Solve analytically.

(b) When the temperature is $-15^{\circ} \mathrm{F}$, what is the height? Solve analytically.

(c) Explain how the answers in parts (a) and (b) can be supported graphically.

Find the equation of the line satisfying the given conditions, giving it in slope-intercept form if possible.

Through $(3,-2)$, parallel to $2 x-y=5$

The hypotenuse of a right triangle measures 61 inches, and one of its legs measures 11 inches. Find the length of the other leg.

Solve the formula for approximate annual interest rate for the variable indicaled.

$A=\frac{24 f}{B(p+1)}$ for B

Give the values of Xmin, Xmax, Ymin, and Ymax for each screen, given the values for Xscl and Yscl. Use the notation described in this section.

Xscl = 50, Yscl = 10

Use the intersection-of-graphs method to approximate each solution to the nearest hundredth.

$$9(-0.84 x+\sqrt{17})=\sqrt{6} x-4$$

Find the slope (if defined) of the line that passes through the given points.

(-8, 2) and (-8, 1)

The maximum load that a horizontal beam can carry is directly proportional to its width. If a beam 1.5 inches wide can support a load of 250 pounds, find the load that a beam of the same type can support if its width is 3.5 inches. What is the constant of variation?

Determine the domain D and range R of each relation, and tell whether the relation is a function. Assume that a calculator graph extends indefinitely and a table includes only the points shown.

Find the equation of the line satisfying the given conditions, giving it in slope-intercept form if possible.

Through $(-1,4)$, parallel to $x+3 y=5$

The cost of tuition is directly proportional to the number of credits taken. If 11 credits cost $720.50, find the cost of taking 16 credits. What is the constant of variation?

Give the values of Xmin, Xmax, Ymin, and Ymax for each screen, given the values for Xscl and Yscl. Use the notation described in this section.

Xscl = 10, Yscl = 50

Find the slope (if defined) of the line that passes through the given points.

(-11, 3) and (-11, 5)