Given equations are y = 7x − 8 and y = 5x − 2
We can solve them easily using substion.
Plug y = 7x − 8 into y = 5x − 2
7x − 8 = 5x − 2
or 7x − 5x =8 − 2
or 2x = 6
or 2x/2 = 6/2
or x=3
Now plug x=3 into any of given equations say y = 5x − 2
y = 5(3) − 2=15-2=13
Hence (3,13) is the final answer.
Answer: -4
Explanation: To find the rate of change, notice that the y values in the
table decrease by 4 each time and the x values increase by 1 each time.
Therefore, the rate of change, or the <em>change in y </em><em>/</em><em> change in x </em>is 4/-1 or -4.
C. both number of tickets sold and cents are discrete not continuous
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