4. A ship is at a bearing of 70° from a ship, 6 km
away. Clapp Island is at a bearing of 150° from the
ship, 4 km away. By first plotting the locations of
the ship and island (using a scale of 1cm : 1km),
estimate how far away the island is from the
lighthouse.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!

55. i don’t no. but zhongshan