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# 3.7: Quiz II

Difficulty Level: At Grade Created by: CK-12

Multiple Choice – Please circle the letter of the correct answer and write that letter in the space provided to the left of each question.

1. __________ What is the x\begin{align*}x-\end{align*}intercept of the line y=25x6\begin{align*}y = \frac{-2}{5} x - 6\end{align*}?
1. (6,0)\begin{align*}(-6,0)\end{align*}
2. (0,6)\begin{align*}(0,-6)\end{align*}
3. (15,0)\begin{align*}(-15,0)\end{align*}
4. (25,0)\begin{align*}\left ( \frac{-2}{5}, 0 \right )\end{align*}
2. __________ What is the y\begin{align*}y-\end{align*}intercept of the line whose equation is 7x+5y+40=0\begin{align*}7x+5y+40=0\end{align*}?
1. (8,0)\begin{align*}(-8,0)\end{align*}
2. (8,0)\begin{align*}(8,0)\end{align*}
3. (0,8)\begin{align*}(0,8)\end{align*}
4. (0,8)\begin{align*}(0,-8)\end{align*}
3. __________ Jim’s One Stop is advertising a special for student cell phones. The special will consist of a charge of \$15 per month and 4 cents per minute. Which of the following equations best describe the plan where x\begin{align*}x\end{align*} is the time in minutes and c\begin{align*}c\end{align*} is the monthly cost?
1. c=15x+4\begin{align*}c = 15x + 4\end{align*}
2. c=4x+15\begin{align*}c = 4x + 15\end{align*}
3. c=.04x+15\begin{align*}c = .04x + 15\end{align*}
4. c=15x+.04\begin{align*}c = 15x + .04\end{align*}
4. __________ What is the y\begin{align*}y-\end{align*}intercept of the line graphed below?
1. (7,0)\begin{align*}(7, 0)\end{align*}
2. (0,4)\begin{align*}(0, 4)\end{align*}
3. (0,7)\begin{align*}(0, 7)\end{align*}
4. (4,0)\begin{align*}(4, 0)\end{align*}
5. __________ Which table of values matches the linear function y=2x+3\begin{align*}y = -2x + 3\end{align*}?
6. __________ What is the domain for the following relation?
1. domain: {x|x3,x ε R}\begin{align*}\{ x | x \le 3, x \ \varepsilon \ R \}\end{align*}
2. domain: {x|x3,x ε R}\begin{align*}\{ x | x \ge -3, x \ \varepsilon \ R \}\end{align*}
3. domain: {x|3<x<3,x ε R}\begin{align*}\{ x | -3 < x <3, x \ \varepsilon \ R \}\end{align*}
4. domain: {x|3x3,x ε R}\begin{align*}\{ x | -3 \le x \le 3, x \ \varepsilon \ R \}\end{align*}
7. For the following cube pattern, complete the table below to determine the number of cubes.
Pattern Number (n)\begin{align*}(n)\end{align*} 1 2 3 4 5 ... n\begin{align*}n\end{align*} ... 50
Number of Cubes (c)\begin{align*}(c)\end{align*}
1. For the following linear graph, identify the x\begin{align*}x\end{align*} and y\begin{align*}y-\end{align*}intercepts.

1. C
2. D
3. C
4. B
5. A
6. D
Pattern Number (n)\begin{align*}(n)\end{align*} 1 2 3 4 5 ... n\begin{align*}n\end{align*} ... 50
Number of Cubes (c)\begin{align*}(c)\end{align*} 1 5 9 13 18 4n3\begin{align*}4n-3\end{align*} 197

cccc=4n3=4(50)3=2003=197\begin{align*}c & = 4n-3\\ c & = 4({\color{red}50}) -3\\ c & = {\color{red}200} - 3\\ c & = 197\end{align*}

1. The x\begin{align*}x-\end{align*}intercept is (4,0)\begin{align*}(-4, 0)\end{align*}. The y\begin{align*}y-\end{align*}intercept is (0,6)\begin{align*}(0, 6)\end{align*}.

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