He l p , and don t just write the answer, write down the equation too, you vv much

Let x be the third quiz grade:

(14 + 19 + x) / 3 = 17
14 + 19 + x = 51
14 + x = 32
x = 18

Your third quiz grade was 18.

Step-by-step explanation:

y = 2x + 5

Step-by-step explanation:

y = mx + b    :    Slope Intercept Form

Our m (slope) does not change, but our b (y-intercept) does.

Step 1: Plug in all numbers except b

y = 2x + b

3 = 2(-1) + b

Solve

5 = b

Step 2: Add slope and intercept into equation

y = 2x + 5