IS 2x+3y=1 and y = 2x+3 parallel or perpendicular ​

Explanation:

Solve the first equation for y

2x+3y = 1

3y = -2x+1

y = (-2x+1)/3

y = (-2/3)x + 1/3

The last equation shown above is in y = mx+b form

m = -2/3 = slope

b = 1/3 = y intercept

We see that the slope of y = 2x+3 is m = 2.

Since the two slopes (-2/3 and 2) are different, this means the lines aren't parallel. They aren't perpendicular either because the slopes don't multiply to -1.

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.