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4 years ago

11

Solve by graphing. x2 + 2x – 3 = 0

2 answers:

Andrei [34K]4 years ago

4 0

The graph is attached

tigry1 [53]4 years ago

3 0

The graph of an equation is the set of all points that are solutions of the equation. Frequently, a relationship between two quantities can be expressed as an equation in two variables. For instance, we can write the equation of our problem as the following form:

$y=x^2+2x-3 \\ \\ Or: \\ \\ f(x)=x^2+2x-3$

So, by graphing $f(x)$ we want to know the x-intercepts. This graph is illustrated in the Figure below. As you can see, points in red are the solution to this problem that are the x-intercepts of our previously defined function $f(x)$ . These points are:

$(-3,0) \ and \ (1,0)$

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