What's the equation of a line that passes through points (0, -1) and (2, 3)?

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The slope of the line is equal to the change inyvalues divided by the change inxvalues. The change inyvalues is 4 (3 1). The change inxvalues is 2 (2 0). 4/2 = 2. To find the intercept, substitute 0 forxin the equationy= 2x+b. 1 = 2(0) +b.Therefore,b= 1, so the equation isy= 2x 1.

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