PLS HELP IM BEGGING YOU I ONLY HAVE A FEW MIN LEFT

Put the equation in slope intercept form by solving for y

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.

What is r i 4.5+10r=-6.5 with work pls