Multiply you first equation by 2 to get 4x + 10y = 22
Now the x terms can be eliminated and cancelled out using elimination.
4x + 10y = 22
4x + 3y = 1
To eliminate you need to "subtract", so you need to multiply one of the equations by -1.
4x + 10y = 22
-4x -3y = -1
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0 + 7y = 21
y = 3
Now plug 3 into either one of the equations to get x.
Answer:
Step-by-step explanation:
Average rate of change is just using the slope formula: (y2-y1)/(x2-x1).
Answer:
320 or 40 sorry if I´m wrong
Step-by-step explanation:
Answer:
I didn't know if you wanted to get the answer
F(3)=2*3-8=-2.
Hope that helps.