7. If (2,- 1) is the solution to the following linear system, what are the values of a and b? ax +by = -7
2ax – 3by = 1

• Considering ax + by = -7

• make b the subject of eqn{1}

• considering 2ax - 3by = 1

• substitute b in eqn{3} with b from eqn{2}

• find b using eqn{2}

b

step-by-step explanation:

calculate the scale factor as the ratio of corresponding sides, image to original, that is

scale factor = = = = 1

step-by-step explanation:

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