¿Alguien sabe como se llaman estas figuras en inglés?

7. parallelogram

8. square

9. trapezoid (trapezium) (maybe "acute" - can't see the whole image)

10. rhombus

11. ?

12. rectangle

13. equilateral triangle

14. scalene triangle

15, 16, 17 and 18 are all isosceles triangles as they have 2 sides of equal length

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

step-by-step explanation: 4 cause 2+2=4