Which is not an equation of the line that passes through the point (1, 1) and (5, 5)?

a) y - x = 0
b) x - y = 0
c) -x - y = 0

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?