How many of each type of vehicle are on the lot

Okay, well right off the bat you can eliminate choice 'b' because if you add up the vehicle's it adds up to 72, meanwhile there's only 64 vehicle's in the lot. And as it says in the problem "there are twice as many cars as there are SUVs."So the amount of cars would be dubble the amount of SUVs.And dubble of 16 is 32 and the only choice that shows double the amount of cars that are SUVs would be answer choice c.

I’m pretty sure the slope would be 1 since the x and y values increase by 1