Answer:
1.The value of k is -5.
2. Rk is (5, -5).
3. Ry is (-5, 5).
Explanation:
In the graph, line k with equation y = -k makes a 45° angle with the x- and y-axes. We need to find the values of k, Rk, and Ry given the point (2,5).
To find the value of k, we can substitute the coordinates (2,5) into the equation y = -k and solve for k.
Substituting the x-coordinate (2) and the y-coordinate (5) into the equation, we get:
5 = -k
Solving for k, we find that k = -5.
Therefore, the value of k is -5.
Now, to find Rk and Ry, we can use the given equation y = -k and substitute different x-values to find the corresponding y-values.
Using x = 5:
y = -(-5) = 5
Therefore, Rk is (5, -5).
Using x = -5:
y = -(-5) = 5
Therefore, Ry is (-5, 5).