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# Maths its hard watch

1. Okay, so my assignment has this question in it.

y=8-10x y=3x2

And this has to be solved graphically.
2. Draw both lines on a graph and see where they intercept
3. (Original post by Dragos0203)
Okay, so my assignment has this question in it.

y=8-10x y=3x2

And this has to be solved graphically.
Well, I guess the question is to find the solutions of the simultaneous equations. To do so, bear in mind that y is the height on the y-axis of the curves given by the formulae involving x. One is a straight line, the other is a curve, but I'll call both "curves" from now on. You want to find the values of x which make the formulae spit out the same y numbers in both case.

That means that you are looking for values of x (i.e. the distance along the x axis) where the height (the y value) of each curve is the same. What does that tell you about the two curves, bearing in mind that you have found an x value where both curves have the same height? What would you see at these points, when you draw the curves?

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Updated: October 10, 2017
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