Use the graph to find the constant of variation. then write the direct variation equation.11

a. constant of variation= 1/2; y = 1/2 x

b. constant of variation = 2; y = 2x

c. constant of variation = -1/2; y = -1/2 x

d. constant of variation = =2; y = =2x

Use the multiplier method to incrases £258 by 43%

What is the vertex form of f(x) = x2 + 6x + 3

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?