Answer :
Answer: y = -x/3 + 7
Explanation:
Slope intercept form: y = mx + b
x + 3y = 21
3y = -x + 21
y = -x/3 + 21/3
y = -x/3 + 7
Explanation:
Slope intercept form: y = mx + b
x + 3y = 21
3y = -x + 21
y = -x/3 + 21/3
y = -x/3 + 7