Answer:
The slope is 9/1 (I don't know if you have to write x) and the y-intercept is 22.50
Step-by-step explanation:
if the slope is 2x the y intercept is 12. If the slope is 4x then the y-intercept is 15 . Every time your x increases by 2 your y-intercept goes up by three. In the question, it's asking you to find out the one for the number 9. 8+2 is 10 not nine so you divide 3 by 2 and get 1.5 so 21+1.5 is 22.50
