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Algebra / Linear equations in two variables Difficulty: Medium

What is the slope of the graph of y=1427x+15+7x in the xy-plane?

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Explanation

The correct answer is 554. In the xy-plane, the graph of an equation in the form y = m x + b , where m and b are constants, has a slope of m and a y-intercept of 0,b. Applying the distributive property to the right-hand side of the given equation yields y=274x+154+7x. Combining like terms yields y=554x+154. This equation is in the form y = m x + b , where m = 55 4 and b = 15 4 . It follows that the slope of the graph of y=1427x+15+7x in the xy-plane is 554. Note that 55/4 and 13.75 are examples of ways to enter a correct answer.