What's the distance between parallel lines whose equations are y= -x+2 and y= -x+8

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Which expressions are equivalent to -6 + 3m

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4