CPM Homework Help : MC2 Problem 3-9

Suppose that a triangle is created on a graph by connecting points $A$ , $B$ , and $C$ below. Marika, Kimikuand Marcus want to move triangle $ABC$ five units to the left and four units down. Write an integer expression to record how the shape moves and find the new coordinates for each vertex.

$A(-1, 3)$

$B(5, -1)$

$C(0, 1)$

Help:

Since each point is translated to the left and then down, there is a negative $x$ -coordinate movement and a negative $y$ -coordinate movement.

Hint:

Think of how you could express the $x$ and $y$ coordinate translation. Would you add or subtract from the original $x$ and $y$ coordinates to get the new translated point?

Example Answer:

(a) $x$ : $-1+(-5) = -6$
$y$ : $3+(-4) = -1$