b=50-5m
the slope is the value with the letter so -5, the y intercept is the number by itself so 50
Answer is C
the 2nd one is not linear between C and F ( because C increases by 1, but 2 f's are 6 and 2 are 8 it is non linear)
3: yes it is linear slope = 700 y intercept is 350
answer is B