Angiosperms have flowers have cones are nonvascular are seedless

Angiosperms have flowers.

Angiosperms are plants which produce flowers and are thus commonly referred to as the flowering plants.

All angiosperms  produce flowers at some stage in their life. Flowers are important to the angiosperms  because they serve as the reproductive organ for the plant, providing a means for the plant to propagate itself. 

Angiosperms are the largest group of plants on earth. They account for approximately 80% of all known living plants. There are about 270,000 known species of angiosperms that live on the earth today.

there's the proffessional site that will you.

i think its y= -4x-14