Abby’s school is 6 blocks west of her house. Her mother works at a store that is 4 blocks east of her school. Use a number line to model the location of each building relative to the others, where east is represented by positive numbers and west is represented by negative numbers.

horizontal translation of 2 units in the positive x direction

followed by

vertical translation of 3 units in the positive y direction

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

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