Answer:
he is right
Step-by-step explanation:
because If they're in fraction form, set them equal to each other to test if they are proportional. Cross multiply and simplify. If you get a true statement, then the ratios are proportional!
(A)
(B)
Explanation:
(A) Slope: y = mx + b
m = 3/7
b = 2/7
Slope =
M =
Y intercept
Plug in
Isolate B
b =
(B) 4 = x, 2 = y
2 = 3/7 * 4 + 2/7