#1. Nope: -12(3)-3 = -36-3 = -39
#2 ok
#3 Nope: as x increases, y decreases
#4 Nope: 8*2+5 = 16+5 = 21
#5 ok
#6 Nope J(10, 5) -> (15,9)
#7 Nope: you didn't change anything!
1. Which ordered pair is not a solution of y = –12x – 3?
(–3, 33)
(8, –98)
(–9, 105)
(3, –39)*
2. Find three solutions of the equation.
y = 2x – 6
(–2, –10), (1, –4), (2, –1)
(–2, –10), (1, –4), (0, –6)*
(0, –6), (3, –2), (–2, –10)
(1, –4), (0, –6), (–1, –9)
3. Which pair of points has a positive slope?
(–2, 9), (1, –9)*
(–2, 5), (2, –11)
(–2, –15), (4, 21)
(–2, 13), (1, –11
4. The ordered pairs (2, –21) and (5, –45) are solutions to which of the following equations?
y = –8x – 5
y = –8x + 5
y = 8x – 5
y = 8x+ 5*
5. Which is a rule that describes the translation of a point from (–5, 4) to (–1, 2)?
(x, y) (x – 4, y – 2)
(x, y) (x + 4, y – 2)*
(x, y) (x + 4, y + 2)
(x, y) (x – 4, y + 2)
6. ΔJKL has vertices J(10, 5), K(2, 8), and L(4, 9). It is translated right 5 units and up 4 units. What are the
coordinates of J’, K’, and L’?
J'(15, 9), K'(12, 7), L'(9, 13)
J'(15, 9), K'(7, 12), L'(9, 13)
J'(14, 10), K'(6, 13), L'(10, 12)*
J'(15, 5), K'(7, 8), L'(9, 9)
7. The point M(x, y) is reflected over the x-axis. Use arrow notation to describe the original point and its
reflection.
(x, y) (x, y)*
(x, y) (–x, y)
(x, y) (–x, –y)
(x, y) (x, –y)
1 answer
1 answer