Astudent solved s system of equations by elimination. describe and correct the error made in the part of the solution shown.

5x+4y — x3→15x+12y=6

3x+3y — x4→12x+12y=-3

3x+0=9

x=3

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.