Parametric Functions day 2

When eliminating the parameter, make sure and solve for "t" for the x-equation and then plug it in the y-equation and simplify.

x = 3 - t

y = -t +2

• y = x-3+2

• y = x-1

• y = x-5

When eliminating the parameter, make sure and solve for "t" for the x-equation and then plug it in the y-equation and simplify.

x = t²

y = 2t

• y = √x

• y = y/2

• y = 2√x

When eliminating the parameter, make sure and solve for "t" for the x-equation and then plug it in the y-equation and simplify.

x = √t

y = t - 3

• t = x²

• x = t²

• y = x² - 3

When eliminating the parameter, make sure and solve for "t" for the x-equation and then plug it in the y-equation and simplify.

x = t + 1

y = t - 1

• y = x -2

• y = x - 1

• x = t - 1

Find the point based on the parametric equations. t = 3

x = 1 - 2t

y =4t + 1

• (-5, 13)

• (13, -5)

• (5, 13)

• (13, 5)

Find the ordered pair based on the parametric equations.

t = -2

x = t² - 2

y = -t + 2

• (2, 4)

• (4, 2)

• (-6, 0)

• (0,-6)

Eliminate the parameter. Convert the parametric equation to rectangular. x= 2+4t and y=-1+6t

• y=(3/2)x - 4
• t=(x-2)/4
• y=x - 4
• y= (2/3)x + 4

A ball rolls across the floor. 
The coordinates of the ball are given by x = t and y = 10 - 2t.
What is the position of the ball at time t = 3?

• Point A
• Point B
• Point C
• Point D

The coordinates of a car at time t are x = 10 - t and y = 8 - t. Which equation describes the path of the car?

• y = 10 - x
• y = 8 - x
• y = 2 - x
• y = x - 2

The coordinates of a train at time t are x = 8 - t and y = 9 - 2t. As t increases, which arrow shows the direction, but not necessarily the path of the train?

• Arrow A
• Arrow B
• Arrow C
• Arrow D