And give explanation 30 pointsA coordinate grid is shown below: A coordinate grid from negative 2 to 0 to positive 2 is drawn. There are three grid lines between a whole unit on the grid.

Part A: Which point represents the origin? (2 points)

Part B: Starting from the origin, explain how to plot the following three points accurately:

(−1, 1)
(1, −1.5)
(2, fraction 1 over 4)
(8 points)

the origin is point (0,0)

Step-by-step explanation:

part B) point (-1,1) you move one point to the left front the origin and 1 step upwards

point (1 ,-1.5) move one point to the right and 1 halves downwards

point (2,fraction 1 over 4) move two point to the right and a quarter upwards

(0,0)

Step-by-step explanation:

27

step-by-step explanation:

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: