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- 1. Multiple Choice
What are the x-intercept and the y-intercept of the graph of 9x-7y=-63
x-intercept: 7; y-intercept:-9
x-intercept:-7; y-intercept:9
x-intercept: 9; y-intercept: -7
x-intercept: -9; y-intercept: 7
- 2. Multiple Choice
Derek has $20 to spend on used books. Hardcover books cost $5 each and paperbacks cost $2 each. What equation in standard form determines the number x of hardcover books and the number y of paperback books he can buy?
20x=5y+2
5+2=20xy
5x+2y=20
7xy=20
- 3. Multiple Choice
For the situation of an item 14, which of the following represents a possible combination of books that Derek can buy? Select all that apply.
(-2,15)
(0,10)
(2,5)
(3,5/2)
- 4. Multiple Choice
What is an equation in point-slope form of the line that passes through the point (4,-1) and has a slope of 6?
y+1=6(x-4)
y+1=-6(x-4)
y-1=6(x+4)
y-1=-6(x+4)
- 5. Multiple Choice
What is an equation in point-slope form of the line that passes through (-7,1) and (-3,9)?
y+3=2(x-9)
y-3=2(x+9)
y+9=2(x-3)
y-9=2(x+3)
- 6. Multiple Choice
Which of the following is an equation of the line through (2, 3) and (-1, -12)? (hint: m=y1-y2/m1-m2)
y=1/5x+13/5
y=-1/5x+17/5
y=5x-7
y=-5x+7
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