12 points!

the coordinates of point a on a grid are (−2, −4). point a is reflected across the y-axis to obtain point b. the coordinates of point b are −4).

*numerical answers expected! *

answer for blank 1:

(2,-4)

Step-by-step explanation:

When a point (x,y) is reflected across the y-axis, you need to change the sign of x. For example, if (-x,y) you need to take away the negative sign, which makes (x,y). Or, if the point is (x,y), you need to add a negative sign to the x, which makes (-x,y). So, if your point (-2, -4) is reflected across the y-axis, you need to take the negative sign off the -2, which makes (2,-4).

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150