Image of the point (-1,-5) under a reflection across the y=x is (-7,-3). Is that true or false?

Triangle xyz has vertices x(1,3), y(0,0)

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Find the cosine function that is represented in the graph.