If you wanted to graph the point (2.5, 1.5) what would youdo?

Mathematics

2 answers:

Harrizon [31]3 years ago

7 0

from the origin (0,0) go to the right 2.5 units and then up 1.5 units, graph the point

andrey2020 [161]3 years ago

4 0

Answer:

Plot in between the number 1-2 and 2-3

Step-by-step explanation:

Turn graph a decimal you have to go between 1 and 2 in order to plot 1.5.

And for 2.5, between 2 and 3

For example:

1 | 2 | 3 | 4

| | |

2.5 3.5 3.5

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There are two ways to do this but the way I prefer is to make one of the equations in terms of one variable and then 'plug this in' to the second equation. I will demonstrate

Look at equation 1, $-2x+y=10$ this can quite easily be manipulated to show $y=10+2x$ .

Then because there is a y in the second equation (and both equations are simultaneous) we can 'plug in' our new equation where y is in the second one $4x-y=-14 \Rightarrow 4x-(10+2x)=-14$ which can then be solved for x since there is only one variable $4x-10-2x=-14 \Rightarrow 2x=-4 \Rightarrow x=-2$ and then with our x solution we can work out our y solution by using the equation we manipulated $y=10+2x = 10+(2 \times -2) = 10-4=6$ .

So the solution to these equations is x=-2 when y=6

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