Jacinda draws triangle ABC and translates it along the coordinate grid to produce triangle A′B′C′ . Then, she determines the functions f(x)=x+h and g(y)=y+k that describe the translation. What are the values of h and k in these functions?

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1 answer

To find the values of \( h \) and \( k \) in the functions \( f(x) = x + h \) and \( g(y) = y + k \), we need to understand how translations work on a coordinate grid.

When triangle \( ABC \) is translated to triangle \( A'B'C' \), each point's coordinates change based on the values of \( h \) and \( k \). Specifically:

  • For a translation in the x-direction, the x-coordinates of points increase by \( h \). This means \( A' = (A_x + h, A_y) \), \( B' = (B_x + h, B_y) \), and \( C' = (C_x + h, C_y) \).
  • For a translation in the y-direction, the y-coordinates of points increase by \( k \). This means \( A' = (A_x, A_y + k) \), \( B' = (B_x, B_y + k) \), and \( C' = (C_x, C_y + k) \).

Since the triangle is translated by both \( h \) and \( k \), the new coordinates of points \( A' \), \( B' \), and \( C' \) can be expressed as:

  • \( A' = (A_x + h, A_y + k) \)
  • \( B' = (B_x + h, B_y + k) \)
  • \( C' = (C_x + h, C_y + k) \)

To find specific values for \( h \) and \( k \), you need the original coordinates of triangle \( ABC \) and the new coordinates of triangle \( A'B'C' \). The values \( h \) and \( k \) can be determined by:

\[ h = A'_x - A_x \] \[ k = A'_y - A_y \]

You would perform the same calculations for points \( B \) and \( C \) to confirm consistency.

Without the specific coordinates of triangles \( ABC \) and \( A'B'C' \), \( h \) and \( k \) cannot be determined. Please provide those coordinates or any additional information if available.