Arectangular pyramid is sliced so the cross section is perpendicular to its base but does not pass through its vertex.

what is the shape of the cross section?

rectangle

triangle

trapezoid

square

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

answer: options

step-by-step explanation:

16 is the absolute value

step-by-step explanation:

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step-by-step explanation: