1. Write the equation of the line with x-intercept (–, 0) and undefined slope.
A) x = B) x = 0 C) y = D) y = x
2. Write the equation of the line with slope 5 and y-intercept (0, –3).
A) y = 5x – 3 B) 5y = –3 C) –3x + 5y = 0 D) y = –3x + 5
4. Find the slope and y-intercept.
x = –7
A) Slope: 0; y-intercept: none C) Slope: undefined; y-intercept: (0, –7)
B) Slope: undefined; y-intercept: none D) Slope: 0; y-intercept: (0, –7)
5. Are the following lines parallel, perpendicular, or neither?
L1 through (–4, –7) and (1, 3)
L2 through (2, 6) and (4, 10)
A) Perpendicular B) Neither C) Parallel
6. Find the y-intercept.
3x – y = –15
A) (0, –5) B) (15, 0) C) (–5, 0) D) (0, 15)
8. A roof rises 7.25 ft over a horizontal distance of 16.62 ft. What is the slope of the roof to the nearest hundredth?
A) 0.44 B) 1.78 C) 1.17 D) 2.29
9. Given f(x) = 3x + 1, find f(a + 3).
A) a + 10 B) a + 7 C) 3a + 10 D) 3a + 4
11. Write the equation of the line passing through (3, 10) and (3, –3).
A) y = 3 B) y = x + 3 C) y = –13x D) x = 3
13. A line passing through (–5, 0) and (8, y) is perpendicular to a line with slope . Find the value of y.
A) –4 B) –1 C) –6 D) –3
14. Given f(x) = 5x2 – 3x + 1, find f(–2).
A) 15 B) –25 C) 27 D) –13