You can skip 4 in that equation and you'll be left with 2x+12=0, which gives you 2x=-12 and finally, x=-6
B) y = -2x
when x = a
y = -2a
when x= 2a
y = -2(2a) = -4a
4x = 6x -10
2x = 10
x = 5
answer
x = 5
To answer this question, you will represent the amount of yards rushed by each running back.
x - Running back #1
9x - Running back #2
The combined yards was 1550, so put these together in an addition equation with a total of 1550. Solve for x.
x + 9x = 1550
10x = 1550
x = 155
Running back #1 rushed 155 yards, and running back #2 rushed for 1395 yards.
1. Is a function
2. Is a function
3. Is a function
4. Is not a function
