Writing a direct variation equation. write a direct variation problem when y = 20 and x = 10 y = kx 20 = k·10 k = 2 y = 2x.

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Presentation transcript:

Writing a direct variation equation

write a direct variation problem when y = 20 and x = 10 y = kx 20 = k·10 k = 2 y = 2x

write a direct variation problem when y = -15 and x = 3 y = kx -15 = k·3 k = -5 y = -5x

write a direct variation problem when y = 35 and x = -7 y = kx 35 = k·-7 k = -5 y = -5x

write a direct variation problem when y = -100 and x = -25 y = kx -100 = k·-25 k = 4 y = 4x

write a direct variation problem when y = 20 and x = 10 y = kx

write a direct variation problem when y = -15 and x = 3 y = kx

write a direct variation problem when y = 35 and x = -7 y = kx

write a direct variation problem when y = -100 and x = -25 y = kx