Answer:
Slope-intercept Form: 
Step-by-step explanation:
Point-slope: 

Answer:
Rational Numbers
Step-by-step explanation:
Answer:
hotogs=$1.50 hamburgers=$1
Step-by-step explanation:
h=hotdog b=hamburger
7h+4b=13
4h+7b=14.5
(7h+4b=13)-4b
4h+7b=14.5
h=-0.57b+1.86
4h+7b=14.5