Solve the system of liner equations using a table 1. y = x + 1
y = 2x - 3

2. y = x - 3
y = -2x + 6

solve the system of liner equations using a graph.

1. y = x - 3
y = -1/2x

2. y = -x -2
y = 5/2x + 5

solve the system of liner equations algebraically.

1. x + y = 19
y = x - 5

2. y - x = 14
y = 3x + 6

2. y = -x -2

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )