Answer:
A) See explanation
B) [tex]y=\frac{1}3x[/tex]
C) $6
Step-by-step explanation:
Part A: because 8 oz of shredded cheese is $3, 1 oz of shredded cheese is $0.375, and so 3 oz of shredded cheese will be $1.125 (so [tex]1 \frac{1}8[/tex] on the y-axis on the graph), 6 oz will be $2.25 ([tex]2 \frac{1}4[/tex] on the y-axis), and [tex]3n[/tex] oz will be $[tex]1.125n[/tex].
Part B: the equation for a line is [tex]y=mx+b[/tex] where m is the gradient of the slope (change in y over change in x) and b is the y-axis intercept. So the equation for this line is [tex]y=\frac{1}3x[/tex].
Part C: Since block cheese costs $1 for 3 oz and shredded cheese costs $1.125, shredded is more expensive. 16 ounces of that will be [tex]16*0.375=6[/tex] dollars exactly.