91Ó°ÊÓ

Graph each function. Identify the domain and range

For Exercises 46-48, use the information on temperatures at the left.

What temperature corresponds to $\mathbf{20}{}^{∘}\mathbf{C}$?

Find the x-intercept and the y-intercept of the graph of each equation. Then graph of the equation.

$47.x=8$

Graph each function .Identify the domain and range.

$\text{f(x)=}\left[\text{x}\right]\text{-4}$

SCIENCE For Exercises 46-48, use the information on temperatures at the left.

48. What temperature is the same on both scales?

Graph the line that satisfies each set of conditions.

Passes through origin parallel to graph of $x+y=10.$

According to the terms of Lavon’s insurance plan, he must pay the first $300 of his annual medical expenses. The insurance company pays 80% of the rest of his medical expenses. Write a function for how much the insurance company pays ifx represents Lavon’s annual medical expenses.

Find the x-intercept and the y-intercept of the graph of each equation. Then graph of the equation.

$x=1$

Graph each function. Identify the domain and range

$\text{ â¶Ä‰}g\left(x\right)=\left\{\begin{array}{l}−2x−3if\text{ â¶Ä‰}x<1\\ \text{ â¶Ä‰â¶Ä‰}x−4\text{ â¶Ä‰â¶Ä‰}if\text{ â¶Ä‰}x>1\end{array}\right.$

Find each value if $f\left(x\right)=3x-5$ and $g\left(x\right)=x^2-x$.

$g\left(\frac{1}{3}\right)$