PLEASE HELP !! Figure B is a scaled copy of Figure A. What is the scale factor from Figure A to Figure B?

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¯¯¯¯¯¯¯¯)?

Find the distance between the point (-3,-4), and (see the picture below)

Suppose the equation of a line is 2x − 4y = − 8. which coordinate pair represents the y-intercept?