The total cost of 1 pencil and 2 erasers is £8, and the total cost of 2 pencils and 4 erasers is £20, as shown below:
1 answer:
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Answer:
Step 1:
We need to place the numbers in descending order of the power. Here, has the largest power, so that number goes first. We keep doing this until we end up with our final expression, placed in order based on the powers.
Step 2:
We can see that the last three numbers, 17, -7, and 6, don't have variables or powers, so we simplify by adding (and subtracting) them.
Our final equation:
As we see, the table shows 0 equals 4, so 4 is our y axis. we now know our equation is y=_x +4.
lets subtract and find the slope using
7-4 3
1-0 1 the slope is 3. lets substitute.
1(3)+4=7
the slope is 3.
lets subtract and find the slope using
7-4 3
1-0 1 the slope is 3. lets substitute.
1(3)+4=7
the slope is 3.