## the graph of a leaner function is shown. the following points lie on the line: (0,20) and (4,40) what is the equation of the function?

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## Answers ( )

Answer: y = 5x + 20. Explanation: So you know that the graph is linear, so you can use the equation to find the line of a slope (y2-y1)/(x2-x1). Plug in the points and solve. You should get a slope of 5. Slope is represented by m, so plug this into the linear equation formula (y=mx+b) and plug another point on the line in to solve for b. You should get 20 for b. Plug the slope and y-int (b) into the equation, and you have your answer: y = 5x + 20.