Which equation represents a proportional relationship? 1x + y = 10
y = 5x + 1
y = 3x + 7
y = 1x

Show me how you find y and z and determine what y and z are you i appreciate it : )

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Mr. rose asked his students to draw a quadrilateral with 4 unequal sides. draw an example of this kind of quadrilateral.