Please show how you get the answer so i can do it as well

If square root x = -7, then x= -49 true or false

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

Proportions in triangles solve for x